How to fix the Error ‘Unable to Find Assembly EntityFramework, Version=’?

In the world of software development, encountering errors is a common occurrence. One such error that developers often come across is the ‘Unable to find assembly EntityFramework, Version=’ error. This error can be frustrating and may prevent your application from running properly. However, fear not! In this article, we will explore the causes of this error and provide you with step-by-step solutions to resolve it.

Understanding the ‘Unable to Find Assembly EntityFramework, Version=’ Error

The ‘Unable to find the assembly EntityFramework, Version=’ error is typically encountered when there is a mismatch between the version of the Entity Framework being referenced and the version available in the project. This error message indicates that the required assembly, ‘EntityFramework’, with a specific version ( in this case), cannot be located.

Causes of the Error

There are several potential causes for this error. Let’s explore some of the common ones:

  1. Insufficient Database Space: Sometimes, the error occurs due to insufficient space allocated for the database. To resolve this, you can log in to your control panel, navigate to the database manager, and check the database space usage. If the space is running low, you can increase the database space quota.
  2. Mismatched Entity Framework Versions: Another cause of the error is a mismatch between the version of Entity Framework referenced in the project and the version available. This can happen if you have multiple projects or assemblies targeting different versions of Entity Framework.
  3. Missing or Incorrect Assembly Reference: If the required assembly ‘EntityFramework’ is missing or the reference to it is incorrect, the error can occur. This can happen when you upgrade or migrate your project to a newer version of Entity Framework without updating the assembly references.

Now that we have identified some potential causes of the error, let’s explore the steps you can take to resolve it.

Resolving the Error

To resolve the ‘Unable to find the assembly EntityFramework, Version=’ error, follow these steps:

Step 1: Check Database Space

First, ensure that your database has sufficient space. Log in to your control panel, navigate to the database manager, and check the database space usage. If the space is running low, increase the database space quota to accommodate your application’s needs.

Step 2: Verify Entity Framework Versions

Next, verify that the version of Entity Framework referenced in your project matches the version available. If you have multiple projects or assemblies targeting different versions, make sure they are compatible. You may need to update the references to match the correct version.

Step 3: Update Assembly References

If the required assembly ‘EntityFramework’ is missing or the reference is incorrect, you need to update the assembly references. Follow these steps to update the assembly references:

  • Open your project in your preferred development environment.
  • Navigate to the references section of your project.
  • Locate the reference to ‘EntityFramework’ and ensure it is the correct version (
  • If the reference is missing or incorrect, remove it.
  • Add a new reference to the correct version of Entity Framework (
  • Save your changes and rebuild your project.

Step 4: Clean and Rebuild Your Project

After updating the assembly references, it is important to clean and rebuild your project. This ensures that all the references are resolved correctly and any cached data is cleared. Follow these steps to clean and rebuild your project:

  1. Clean your project by selecting the ‘Clean’ option from the build menu or by using the appropriate command in your development environment.
  2. Rebuild your project by selecting the ‘Rebuild’ option from the build menu or using the appropriate command.
  3. Once the rebuild is complete, run your application and check if the error persists.

Step 5: Verify Other Dependencies

Sometimes, the ‘Unable to find the assembly EntityFramework, Version=’ error can be caused by dependencies on other frameworks or libraries. Ensure that all the necessary dependencies are correctly referenced and up-to-date. Verify that any other packages or components your project relies on being compatible with Entity Framework

Step 6: Update Entity Framework Version (Optional)

If none of the above steps resolve the error, you may consider updating your Entity Framework version to match the version referenced in your project. This step is optional and should be approached with caution, as it may require additional changes to your code base.


The ‘Unable to find the assembly EntityFramework, Version=’ error can be frustrating, but with the right steps, it can be resolved. In this article, we discussed the causes of this error and provided a step-by-step guide to help you troubleshoot and resolve it. Remember to check your database space, verify Entity Framework versions, update assembly references, clean and rebuild your project, and verify other dependencies. By following these steps, you should be able to overcome this error and get your application up and running smoothly.

If you need further assistance or encounter any other issues, consult the official documentation or seek help from the developer community.


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13 Facts You Should Know Before Purchasing Shared Hosting. -KLCWEB

It is on the grounds that they imagine that it does modest facilitating and will give restricted highlights. Indeed, that isn’t true with each facilitating organization. You should look at the best of the organization and their offers so you don’t avoid anything.

Above all, it is fundamental that you know the real factors that you should check while purchasing the common facilitating administrations so you don’t get some unacceptable arrangement. Peruse the article till the end and you will get to know the best of the pointers to put a mark prior to purchasing the common facilitating.

1. Renewal Cost

Many web facilitating organizations pull a prank on clients by showing a lower beginning cost to fool them into buying into their arrangements. The story behind it is very unique. These modest plans convert into costly evaluating plans after the reestablishment.

In the event that you are new to web facilitating, odds are you may know nothing about this reality. Be that as it may, it exists and large numbers of the facilitating organizations follow it. Particularly you may be picking shared facilitating to get a reasonable arrangement however, all things considered, you will be caught in a costly bundle. Thus, check for yourself.

2. Backups

You really buckle down on your substance that its security may be significant for you. With customary reinforcements, you will be guaranteed the well-being of the substance and instruments of your site. Backups are finished in various reaches; some Hosting organizations give daily, and some give week by week.

There are additionally shared hosting organizations that give an automated backup which implies you won’t have to stress over it. Indeed, even notification assuming they give it to free or charge you for the assistance.

3. Rating

It will be a straightforward step for you too. You should check sites that have evaluations and surveys of the web hosting organizations. This will help you in knowing better. In any case, do visit just the confided in locales to know the genuine surveys and evaluations.

4. Plans

On the off chance that a web facilitating organization has assortment in their arrangements, that can be useful for you. Not exclusively to move to various sorts of facilitating however to overhaul or assortment in shared facilitating itself. You should get more elements or less sooner or later with adaptability this will be simpler.

5. Free Domain

Nobody requires to carry concentration to this point. However, here I am requesting that you if it’s not too much trouble, note down this and consider your rundown. You can find many web facilitating organizations that give free spaces even with shared facilitating plans. Save yourself a lot of cash by this step as opposed to getting it independently.

6. Customer Support

For any web facilitating administration, client assistance is the essential element that ought to be checked. You should take a strong fascination with watching surveys of clients on this. Client care may not appear to mean a lot to you toward the beginning.

In any case, there are examples when your site might experience the ill effects of free time or low speed. At that point, the client’s assistance ended up being useful. Most web facilitating organizations give all-day, everyday administration. You help support through a wide range of sources like live talk, email, and telephone even.

7. Uptime

Uptime is the main component. It should be considered at any expense. Keeping away from this will appear on your site’s presentation. The standard web facilitating uptime is 99.95%. Anything underneath that would end up being hurtful to your site’s presentation. With low uptime, the bob pace of your site will increment. This influences the web index positioning.

8. Unlimited

You can without much of a stretch find many web hosting that gives limitless highlights and numerous things. Yet, recall these limitless elements are not limitless 100% of the time. You should remain mindful of these stunts and clear these questions ahead of time. This will get you far from succumbing to any lure that says limitless and it really isn’t limitless.

9. Cancellation Policy

For some individuals picking web facilitating may be the toughest choice of their life. With basically no information on the offices and elements. However, you want to realize that there is a more secure side to this decision. You can browse the many web facilitating organizations that give unconditional promises.

You can profit from the advantages, experience the facilitating administration, and afterward possibly choose if you have any desire to proceed. In the event that you could do without web facilitating you can guarantee the cash back.

10. Freebies

Who detests gifts? Particularly when you get it at a low costing plan which is practically the situation for shared facilitating. You will capitalize on the costing value that you are paying to assume the web facilitating organization that you picked gives you gifts.

The most widely recognized ones to check are Free SSL authentication, CDN, space, and reinforcement. There can be numerous different elements; these are only guides to help you to remember the advantage.

11. Speed

You may be considering what sort of speed a web facilitating organization gives. It relies upon many elements. The speed of the site is impacted by numerous different elements. In any case, you should check the stacking season of the site page, transferring time, and, surprisingly, the server speed.

Every last bit of it will help you in getting more transformations. With a sluggish stacking page, a guest would have zero desire to invest more energy on your page. With a speedy shift, your page will experience the ill effects of a skip rate.

12. Flexibility

You are picking a web facilitating administration since you maintain that the errand should be simpler for you. There would be many devices or applications that you need to use on your site to make a superior Impression. This should be possible by utilizing different devices. Be that as it may, some facilitating organizations don’t allow you to coordinate other visitor instruments or applications. Remember this when you are picking your common facilitating plan.

13. Data Centers

Presently, we should zero in on a component that stays overlooked. All the time individuals continue to keep an eye on the highlights and plan and they neglect to check the area of the day servers from which they are purchasing the common facilitating plan. The server farm will influence the server speed and execution.

As per me, you should pick the common facilitating which has an information area in the locale where you want the crowd from. This aids in expanding positioning.

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5 Product Page Examples to Inspire Your eCommerce Redesign – KLCWEB

1. Olipop

In the chaos of life, maximum shoppers enjoy the subtleties of business enterprise. No consumer wants to be part of a scavenger hunt to learn about an unmarried product.

That’s why product pages exist. They provide a comprehensive review of an object. Moreover, a great format of a product page can manual clients to the essential statistics to make a brief purchase.

“Use a well-based product page that makes it smooth for website visitors to purchase from you, and you may enjoy multiplied revenues from the equal marketing overall performance. But get this great page wrong, and you’ll be lacking out hugely on sales that could in any other case have transformed,” writes Erika Varagouli, a global content marketing strategist at Semrush.

Olipop is aware of the price of web page shape. On the proper side, the soda emblem suggests the product name in conjunction with the superstar rating and pricing plan options. The left aspect displays an excessive resolution product photograph.

Continuing down the product web page, Olipop offers consumers a listing of the substances with the nutrition facts. There’s no guessing in which product records are placed on this page.

2. BeardBrand

Peer stress can create a remarkable product web page, too. Social evidence gets customers thrilled about a product and removes the worry of being the primary to strive for something new. With not anything to lose, shoppers are more likely to click the purchase button.

Social evidence takes many one-of-a-kind bureaucracies. You can display megastar scores on unique merchandise. Or you can publish the real critiques on the page.

If you’re trying to kick it up a notch, you can even upload consumer-generated snapshots out of your clients. That way, consumers can honestly see your satisfied customers’ faces.

Beardbrand uses social evidence inside the shape of celebrity rankings at the top of its product pages. Shoppers can even scroll all the way down to see the breakdown of the ratings and read patron critiques.

3. Warby Parker

Consumers take a large threat when ordering online. They depend mostly on product visuals to assist make a buy. So, one picture can decide if your emblem earns a patron or loses one.

Take amazing product pics with the proper lighting fixtures and a solid background. Experts propose using a couple of angles to offer the purchaser a 360-view of the product. Justina Bakutyte, a growth advertising supervisor at Yieldify, says:

“You need good, super snapshots of your product so clients can get an awesome examine the product. You want them to sense like they’re searching on the item in man or woman, so make sure to reveal pix of the product at all angles.”

Take some tips from Warby Parker. The eyeglass retailer offers their shoppers more than one snapshot of a single product. You can enjoy the product from specific angles.

4. Wild One

Words count number. However, too frequently, brands forget about the value of a nicely-written product description. It’s now not sufficient to speak about your product’s specifications. Your purpose is to engage potential consumers about the benefits of your merchandise.

The exceptional product descriptions paint a whole photograph of the product. The phrases will express the feelings felt while the consumer eventually gets the product. Will your purchasers experience excitement? Or perhaps relieved?

Wild One is aware of a way to capture their customers’ interest. In their product descriptions, the puppy brand specifies while to use their dog leashes: tandem walks and regular adventures. The description also explains the blessings of the product: durable, water-resistant, and easy to smooth.

Stray far away from the uninteresting product descriptions. You can upload a mini-tale approximately how the product suits the customer’s lifestyle. You even can namedrop an influencer who used the product. Get innovative and have a little fun.

5. Spark Grills

Let’s face it. Consumers hate ready around for a website to load. They expect your website to pop up inside some seconds. If now not, they take into account your web page is “broken” and bounces to every other website.

To fight web page load pace, you’ll want to avoid unoptimized product pictures, flash content material, and unclean code. Instead, you want to do the entirety within your electricity to make your web page load as speedy as feasible.

Spark Grills is all about speed. When touchdown on their website online, the brand’s product pages load in a blink of an eye fixed. This speediness allows buyers to quickly browse without looking forward to another grill photo to load.

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How to Use SaaS Tools to Grow Your Business – KLCWEB

In this increasing number of aggressive global, agencies want to operate efficaciously to develop. And you may use Software-as-a-Service (SaaS) tools to help you with that.

In this guide, we will cover:

  • What is SaaS?
  • Why is SaaS important?
  • Recommended SaaS tools for productivity, hosting, customer relationship management (CRM), email marketing, and social media marketing.

What is Software-as-a-Service?

SaaS is a software program used thru an Internet connection instead of downloading the software for your computer. It is a cloud-based software program delivery system and is one of the three essential components of cloud computing, with the other components being Infrastructure-as-a-Service (IaaS) and Platform-as-a-Service (PaaS).

“Think of Google Drive and Slack. They are software you access and use from the Internet.”

You can utilize the various SaaS gear available to develop your commercial enterprise whether or not you’re in a retail commercial enterprise or an enterprise.

Why is it Essential to Use SaaS Tools to Grow Your Business?

According to a report via BetterCloud, 38% of organizations are jogging almost absolutely on SaaS. On average, agencies use a whopping 34 SaaS packages.

SaaS gear allows groups to run operations anywhere and at little value. According to Computer World studies, agencies that shift to SaaS answers can lessen their IT spending by using more than 15 percentage.

To experience the provider furnished by the software, all you need is a tool and an Internet connection.

Many corporations offer SaaS services in a subscription plan or a pay-as-you-move version, presenting flexibility at a low-cost rate.

Another gain is more suitable teamwork. BetterCloud’s document further pointed out that 86% of organizations that use SaaS enjoy significantly higher employee engagement.

With a lot of these competitive blessings, it is essential to start using SaaS gear now in your business!

But with the plethora of equipment to be had, which of them have to you select?

SaaS Tools You Can Use to Grow Your Business

Here are some of the best SaaS tools categorized by the service they provide.


Google Workspace (Formerly G Suite)

Google Workspace, formerly called G Suite, offers an array of productiveness tools for companies to help you get matters completed as a group.

Gmail is one of the most extensively used email services. In Workspace, Gmail affords comfortable, ad-unfastened custom enterprise email as a basis and gives sturdy integration with Google Calendar and Google Meet, each of that is clean to apply and could boom productivity.

Google Drive offers cloud storage and synchronization services, which permit users to shop files on their servers, percentage documents with others, and synchronize documents across gadgets. Team documents can be prepared in a shared area and use less of your disk space.

Docs, Sheets, and Slides are an internet-based totally productive office suite. It lets in more than one customer to concurrently paintings on the same file, imparting more effective communication and efficient teamwork.

Monday.Com is a work control device that will help you get organized and stay on task. The pleasant interface is straightforward to use and presents a primary platform for your employer’s tasks.

The idea in the back of the product is to provide a customizable net and cellular app platform for paintings management, with greater than a hundred prebuilt automation recipes. The interface can fit any sort of business operations, from R&D agencies and advertising teams to customer support, IT departments, HR personnel, media manufacturing teams, and lots of others.

Hosted Email

If you are looking for a comfortable SaaS email, Liquid Web has got you included with its business electronic mail answer.

Business Email Hosting

Premium Business Email with the aid of Liquid Web takes the trouble of dealing with e-mail servers away. Standard mailbox pricing starts at $1.00 for one mailbox per month, and there is no extra cost for upkeep, antivirus, anti-junk mail software program, or backup. You can get the right of entry to your e mail from everywhere, and it’s clean to start the use without hardware to deploy or software to put in.

Customer Relationship Management

Customer Relationship Management is an important process for any enterprise. Connecting with modern customers and accomplishing out to prospects is essential for a business boom. And you may use SaaS gear to provide a better patron experience efficiently!


Hubspot is an inbound advertising and income CRM platform that helps groups entice visitors, convert leads, and near clients.

Designed for developing businesses, it gives offerings for growing leads, accelerating income, streamlining customer service, and building a powerful website. The software program centralizes all of your leads and contacts, saving you time to access facts.

It also affords patron comments and understanding base capabilities to understand clients higher and teach them approximately your products and services.


ImBee is an up-and-coming CRM tool that focuses on instant communique channels. As extra organizations connect to their customers through instant messaging apps like WhatsApp and Facebook Messenger, having a centralized platform can help sales and customer service teams stay organized, boom income performance, and be greater powerful.

Besides a totally customizable client records panel, it gives various capabilities such as chatbot, message scheduling, and templated replies. It reduces reaction time and connects better with clients.

Email Marketing

Email advertising and marketing is an antique however powerful approach to build meaningful connections with customers and force income. With so much e-mail advertising and marketing software from which to use, we’ve picked two of the excellent.

Constant Contact

Constant Contact allows small companies to attain a brand new audience and facilitates save time in the advertising and marketing system. They offer e-mail templates for smooth enhancing and customization, making your emails stand out on each device.

The e-mail marketing automation service they offer keeps your target market engaged and helps in building relationships. It consists of a welcome e-mail for brand new subscribers and resending emails to non-openers.

What’s more, their actual-time tracking gear immediately offers reports on commencing, clicking, and the in addition sharing of your emails. The statistics insights additionally will let you examine your marketing approach more correctly.


ConvertKit is another fantastic tool to apply for email marketing. What makes it particular is that it’s far designed via creators for creators.

It has an easy and effective visual automation builder to make aesthetically pleasing and attractive emails. Email templates and muddle-loose writing options save you time on editing.

Besides, ConvertKit has a healthy recognition with electronic mail companies, meaning your emails get introduced into the inbox instead of the junk box. It has a high delivery price of 98% and a 30% average open rate.

ConvertKit is also subscriber-centric, which means that you may without problems arrange all of your subscribers from simply one list with the aid of adding tags and creating segments to send them centered content material primarily based on their hobbies.

Social Media Marketing

With more than 1/2 of the arena now the usage of social media, it’s far turning into extra essential for organizations to leverage social media to grow their business. However, it is able to be daunting to control numerous social media platforms like Facebook, Twitter, LinkedIn, Instagram, and extra. You can use equipment to agenda posts and manage your social media money owed.


Hootsuite is one of the most effective social media management SaaS agencies with more than 18 million customers. It gives 5 primary services to Publish, Engage, Advertise, Monitor, and Analyse. Compatible with all of the primary social media platforms along with Facebook and Instagram, you can plan, create, and agenda your posts in one place. It additionally has group-friendly features that permit your group to collaborate.

Sprout Social

Sprout Social presents organizations with a clean-to-use platform that makes it possible to interact and post on social media, as well as provide analytics for more powerful advertising and marketing.

It offers four primary capabilities: Listening, Publishing, Engagement, and Analytics. This makes it an incredible tool for social media managers, social client care sellers, and social analysts. Similar to Hootsuite, it may combine with all predominant social media systems along with Facebook, Instagram, Twitter, LinkedIn, and Pinterest.

Grow Your Business With SaaS Tools

SaaS gear is like virtual groups that assist you to cope with and control many aspects of your enterprise, from productiveness, website hosting, and CRM, to e-mail advertising and marketing and social media management. They save you time and money and let you develop your enterprise.

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How to get ads on your blog without junking it up – KLCWEB

There are many approaches to make money through the use of your internet site. One precise choice that the general public can take gain of is advertising for your blog. This is a way to earn sales in change for giving out seen areas to your web page. It can be a completely moneymaking business, in particular, if your website already has a decent quantity of site visitors. But to achieve success, you want to recognise the basics of a way to get commercials in your blog.

Why you should advertise on your blog

Think approximately it, your website could be very much like real property. The extra content you have, the extra ability space you need to make cash with. All you have to do is location advertisements around your articles. As the content author, whether or not a small commercial enterprise proprietor, an entrepreneur or a blogger, you could control what varieties of commercials and what number of you need to show in your blog. In some instances, you may even manipulate the rate.

Sure, you may attempt different methods to make money blogging, but whilst you discover how to receives commercials in your weblog, you’ll discover there are several rewarding options that may be lopped below this technique.

How to get ads on your blog

There are masses of opportunities to earn earnings by setting commercials in your website. Below are just a few, in addition to a few links to a number of the places you can go to get advertisements on your site.

Some of the sites may have greater techniques for buying commercials in your blog than simply what’s indexed. Also, each of the corporations has its own suggestions and requirements for websites. These necessities could be something from a minimum web page age to how a lot of site visitors your internet site receives. Some networks may also even have rules about the number of ads displayed on a single page or publishing subsidized content on returned-to-lower back posts.

Pro tip: A precise rule of thumb when trying to be a part of an ad community is to wait to reach out until your website has been energetic for at least ninety days.

PPC ads

PPC (pay-in keeping with-click on) marketing pays out a hard and fast quantity whenever someone clicks on an advert. The PPC ads displayed on a page of your blog are pulled in due to the fact they target a keyword that fits with the subject of your article.

The employer that created the advert pays for every click (as much as preset finance), and since the ad lives for your website, you get a portion of that spend.

Just because you sign up with a PPC community, but, doesn’t imply you may usually have a web page full of advertisements. Which classified ads appear and where is depending on how applicable they may be to your website. For instance, if you are running a tech gadget weblog, you’ll be more likely to peer ads that are associated with era and devices.

For some bloggers with high site visitors, hosting PPC advertisements is a method that could convey in pretty a chunk of cash. In more particular niches, which normally have key phrases that aren’t as typically searched, the payout might take time. Either manner, finding the right platform to companion with is the first step to earning profits. Services that provide PPC possibilities for bloggers and content material creators encompass:

Banner and link advertising

Third-birthday party banner and in-textual content hyperlink marketing networks can help bloggers discover advertisers who want to submit fixed display banners or text-hyperlink commercials on their weblog. These services let you rate a set rate for the advert area or assist you to structure rates within the PPC format. You can select which kind is great for you. Either manner, what ads are being displayed and where throughout your pages.

When the 0.33 birthday celebration lists your weblog as an advertising and marketing outlet, it shares a little information about your internet site — along with visitors stats, content material topics, and anything else that might encourage an advertiser to use your weblog. It can even list a charge, every so often via month, for displaying an ad on your website. Because it’s far a 3rd-birthday party provider, they get a cut, that is sometimes half of the price that the ad area turned into listed for. Below are some services to help you promote banner and hyperlink commercials:

Sponsored posts and reviews

If you don’t need to await PPC advertisements to pay out and 1/3-celebration networks to bring in advertising opportunities, increase your probabilities of being profitable by means of producing backed content material. Between all that content you write, it’s OK to have a blog publish here or there that has been paid for through a brand (simply ensure you be aware of its advertorial content material). The following are some businesses that are seeking out human beings to put in writing approximately a business or one of its merchandise:

These networks have their own requirements and no longer all are identical. It’s extremely important to be honest and obvious approximately your traffic, along with on social media channels, as lots of them provide social media sponsored advertisements, too.

Sell your personal classified ads
Sometimes when looking to get ads for your blog, you just want to take some manipulate over your very own advertising and provide in-house banner ads, textual content-hyperlink advertisements and backed content material opportunities. Some companies have active blogger and internet site outreach applications and like to paintings immediately with you instead of a 3rd-birthday party advert service. In this case, there’s no middle man (or female). You can rate what you experience or negotiate a price and terms which might be agreeable to both parties.

When coping with ad income to your personal, you may want to set up a web page on your website asking advertisers to contact you about advertising and marketing possibilities. Better but, you would possibly need to put together a media kit. These function as a short brochure showing potential advertisers what your web page stats are, what sorts of advertising and marketing areas you offer, and what kind of you are charging in your service.

A lot of times, a media kit looks more polished.

Knowing a way to get ads on your blog manner you have got a first-rate opportunity to make some money. You can attempt as among the above strategies as feasible to get the maximum out of advertising income. Keep in mind, although, that too many or disturbing commercials may additionally send traffic away, so attempt to locate the proper stability. And if having commercials around your content simply isn’t your thing, you can usually attempt making a living thru other processes, together with associate marketing or visitor running a blog.

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Decoding The KVM Hypervisor Technology – KLCWEB

For years, Shared Hosting and Dedicated Hosting have been the 2 accepted web website hosting systems. Shared Hosting became one-stop of the spectrum, with absolutely shared sources and low-priced expenses. Dedicated Hosting changed into the remaining website hosting platform with devoted manipulate and privateness and high charges. With time, we saw the development of every other website hosting platform VPS Hosting the suitable median of Shared and Dedicated Hosting setups. It provided the isolation and management of Dedicated at a rate closer to the Shared Hosting plans. This was viable due to a technology known as server virtualization and a software program referred to as a hypervisor.

So, a hypervisor is a piece of software program or hardware (on occasion, a mixture of each) that allows you to create more than one machine (known as VMs or Virtual Machines) by the use of an unmarried set of resources.

For example, permit’s say you’ve got an effective laptop and 5 humans need to use it one by one. You set up a hypervisor, and it will create five wonderful computer systems out of the only foremost machine which you have. The most important pc is referred to as the Host, and the alternative computer systems are known as the Guests. All the visitor machines are VMs.

Hypervisors are extensively used with servers and form an essential pillar of server virtualisation within the VPS Server Hosting infrastructure. Wherever there’s a want for virtualisation, hypervisors may be deployed.

What is a KVM hypervisor?

KVM stands for Kernel-primarily based Virtual Machine. In essence, it’s a virtualisation layer that’s been constructed into the Linux kernel directly. This approach that you can run the kernel on the root node, enabling you to run multiple running systems.

All that jargon essentially manner that KVM works through converting Linux itself into a hypervisor. KVM offers the whole thing (additives like method scheduler, tool driver, community stacks, I/O stacks, memory manager and so forth.) that the hypervisor (Linux) desires to operate the VM.

All the VMs will have get admission to the network playing cards, reminiscence, CPU cores, and so forth. This permits you to run more than one machine off an unmarried useful resource pool or a server.

Advantages of KVM

Multiple operating systems on the same hardware

In any office, the IT wishes are various. While someone’s task may be to give enterprise PPTs, others want a machine on which they can code. As the scale of the employer is going up, so does its IT needs. You’re going to need a numerous set of programs and running structures.

A KVM hypervisor is a great answer for a problem like this. With one imperative pool of assets, like a server, you can set up more than one machine, all with their very own dedicated assets and run on specific operating systems. Each VM will work as an impartial pc, but you won’t have the bags of getting to address multiple computers.


Having a couple of computer systems, connecting them all to 1 network, and retaining all of them is tons extra pricey than having a single server. You don’t need an IT group of workers to provide or update the masses of pieces of hardware. You also don’t need to spend a ton on the hardware itself, for the reason that there’s simply one crucial server.

Optimisation of server resources

When the usage a server for website hosting your internet site, you’re losing a variety of assets. This may be CPU cores, garage, RAM anything, sincerely. Most people by no means have any use for all the assets that a server has. By the use of the KVM hypervisor, you’re ensuring that computer assets aren’t being wasted. You can start with basic resources and scale up as and while you see that you need extra resources.

KVM and web hosting

KVM is extensively used within the internet web hosting commercial enterprise because of its architecture and the blessings that it gives. KVMs are mainly used with VPS Hosting plans. VPS Server Hosting is a type of web hosting where a single bodily server is split into more than one digital server, and every virtual server enjoys whole isolation and a devoted allocation of sources.

For example, a VPS Hosting Server may additionally residence twenty websites. All the websites draw sources from the same server. However, assets are allocated to each server. So, permit’s say you’ve decided on a plan with 2GB RAM, 50 GB storage, and 3 laptop cores. These resources are allotted to you and aren’t shared. So, you will have these sources at your disposal at all times. The final sources of the server are similarly allotted to extraordinary websites. This way, each website behaves like a small, private, devoted server.

This structure is enabled by KVM hypervisors. A website hosting agency begins with a bare metal server and installs the KVM hypervisor on it. Whenever there’s a brand new client, they create a new VM. Each VM is independent of the other however draws resources from the identical pool (the naked steel server). When your net web hosting partner creates the VM, they allocate sources primarily based on the plan which you’ve chosen.

At this factor, KVM creates new VMs for each new customer till the server runs out of assets to allocate. There are several key advantages that KVM offers for hosting organizations as well as customers.

Benefits of KVM for web hosting


When a server comes underneath cyber-assault, all of the information on it’s far underneath danger. Data can be stolen, sold, or just leaked. For enterprise websites, that is a huge hassle. People are becoming increasingly concerned approximately records security and privacy.

With KVM, the maximum vital advantage is that every VM (website, in this case) is completely unbiased of the opposite VMs. So, if a website that’s to your server, it’ll make no difference to you and your website by any means. This is due to the fact your website is completely remoted from all the different websites on the server.

Unhindered access

In conventional website hosting kinds in which server resources are shared, there are constantly quite some rules that the hosting business enterprise lays down. This is due to the fact absolutely everyone is using the equal server, and they don’t want one website to have an adverse effect on the others. So, lots of capabilities are disabled.

With the KVM and VPS Hosting mixture, that doesn’t happen. You can have whole get admission to put in, uninstall, modify, upload, and cast off something you want. This is due to the fact all your moves are insulated from other websites within the surroundings. In this manner that you can set up your website exactly the manner, you need it.


Virtualisation has modified how the website hosting server works. It has made the servers greater agile, at ease, and greater importantly, it has taken the fees right down to a stage wherein even small and medium-sized companies can take benefit of these web hosting plans.

KVM hypervisors are at the leading edge of that alternate. It has sincerely altered the net web hosting enterprise. Only agencies and big corporations had websites before. Now, due to the fact the cost has long been passed down, small organizations will have a high-quality digital presence as well.

Leading website hosting businesses across the globe use KVM hypervisors to create aggressive VPS Hosting plans. KLCWEB offers KVM Hypervisor-based totally VPS Hosting plans with expandable SSD (Solid State Drive) Storage, entire root gets right of entry to, pre-hooked up cPanel and advanced DDoS protection. If you’re looking to start a website, KVM VPS Hosting from KLCWEB provides a cosy, affordable, and reliable way to do it.

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Top 10 Free and Open Source CMS Softwares – KLCWEB

Today, coping with websites is now not a job for professional programmers most effective. With the help of content management structures, you may upload stuff to your webpage in some smooth steps. Think of CMS software as a device that could cope with any type of content material unexpectedly.

Luckily, there are numerous loose open supply content material control structures that are reachable to any person. You can order your assignments on EssayWritingService and spend more time creating your websites or monetizing your online save.

If you’re nonetheless now not certain why content management systems are useful, right here are a few advantages of the use of CMSs:

  • They make Webpage Maintenance Easy;
  • They can Schedule Tasks for other Users;
  • They usually have Built-in Designer Themes;
  • You are in Control of Your Website.

Here is the list of the Top 10 Best CMS Softwares that don’t require coding knowledge!

Top 10 Free and Open Source CMS Softwares – KLCWEB


It is critical to recognize the distinction between and Both websites offer content material management offerings to the users. gives the entire software package for download, which makes the websites of the users self-hosted. is a hosted platform, and customers have restrained control over their internet pages.

Top 10 Free and Open Source CMS Softwares - KLCWEB allows the consumers to change every aspect of their websites, from the fonts to pop-up plugins. Users are also responsible for hosting and maintaining their domain on their own.


This content control gadget is a simplified version of WordPress.Org because the websites are already hosted for the benefit of the customers. In different words, the web pages are already managed by WordPress.Com. The customers simplest want to tailor the advent, and they are able to start publishing!

One drawback of the usage of this CMS is that your domain will constantly have ‘WordPress.Com’ in its call. For a few users, it’s no longer a hassle, especially while the website is easy and contains just a few pages of content.

3) Joomla

Joomla is in the top 3 most used loose open-source content material control systems nowadays. It has a number of styles that customers can choose for his or her websites. It is still easy to apply, like WordPress.

Another advantage of Joomla is that it has hundreds of extensions that might be cautioned by other purchasers. You can customise your content as you like and now not rely on your technical abilities.

4) Drupal

Drupal is one of the best CMS software that is suitable for a lot of data. You can register with this software along with other users. The big advantage is that you have control over what other people can do within this content management system.

Drupal also offers a wide range of pre-made themes, making website editing even easier! You can also share the created content across multiple platforms and translate your data into different languages.

5) Magento

Magento Open Source is mostly used for business purposes. It allows you to modify your commercial store for free. At the same time, if you want more independence, you can sign a monthly plan and allow Magento to manage your business for you.

As compared to previous CMS software on this list, Magento is definitely more technical. You would need at least some coding knowledge, or hire a professional who will set your business up for you.

6) WooCommerce

This content management software is an application that is owned by WordPress. It is easy to use for those who already manage their website on WordPress and want to monetize the content. This CMS is a simple alternative to Magento or Shopify, as it doesn’t need a lot of technical knowledge.

One of the cons of using WooCommerce is that if you want to use some plugins or extensions, you have to pay for them. This seems fair because WordPress doesn’t need any payment, and WooCommerce is also free of charge.

7) Wix

This web site builder is a good answer for those who create small websites with minimum pages. It is easy to apply with numerous templates and first rate building velocity. This CMS software also gives round-the-clock assist to the users.

There are some cons to using Wix. For example, this CMS insists on putting the Wix brand on web pages. It can be removed with a monthly subscription. Also, the templates are not switchable, which means that if you commit to one interface, it might take a long time to change it to another template.

8) Shopify

Similar to WooCommerce, Shopify allows users to manage their e-commerce business. One of the advantages of this CMS software is that it is secure from any kinds of leaks or attacks. Also, it is very simple to use. 

Some users say that they don’t like the lack of flexibility with Shopify. You still can manage the appearance and the commercial side of your store. At the same time, you will not have access to the source code of your website. This means that essentially you will be managing only the look of your store.

9) Ghost

This content management system is used, for the most part, for blogs and writing. Even though this CMS is very convenient, it doesn’t really have any use beyond blogging. Many users find Ghost to be extremely helpful for monetizing their writing.

If you want to start making money with your blog, Ghost will help you set up monthly subscription plans for your readers. Think of this CMS software as an e-commerce option for your written content.

10) Blogger

Similar to Ghost, this content management system is designed specifically for writing and creating online blogs. This CMS software is also known as Blogspot. Blogger is free to use if you don’t mind having a Blogspot subdomain in the name of your website. It also is suitable for beginners and those who don’t know any coding.

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How Your eCommerce Business Can Nail Holiday Customer Service – KLCWEB

The vacation season is simply across the nook, making things thrilling for online enterprise owners. While the income boom is welcome, it’s also critical to put together for the digital excursion rush. In nowadays’s present-day global, customer service can make or smash e-trade agencies.

The latest Microsoft observe shows that a whopping 90% of Americans take into account customer support a vital figuring out factor in deciding on a brand. Let’s face it: nobody wants to do enterprise with organizations that treat customers poorly. Read on for 6 hacks to reinforce your customer support and help online for the holidays!

1. Analyze Previous Data

How Your eCommerce Business Can Nail Holiday Customer Service - KLCWEB

One of the satisfactory ways to plot for the holidays is to study previous statistics, inclusive of customer pictures transferring through display interactions, ache factors, and online customer service development opportunities.

-> Holiday buying incremental customer volume as opposed to the relaxation of the 12 months
-> Common client concerns and questions
-> Customers’ favoured communique channels

Analyzing this fact will assist you to come up with a strategy to better accommodate the expanded site visitors and questions that are positive to include it. Then you may make a more knowledgeable strategy so your assist crew can cross into the vacation rush with a plan.

2. Prepare for the Holiday Traffic

Holiday purchasing is supposed to be amusing, however, studies completed via the American Psychological Association display it stresses out eight out of ten Americans. Any website thing can chase customers away, together with sluggish loading instances, complicated navigation, and complicated checkout tactics.

Remember to assess integrations, restock inventories, and beef up security features to raise customer reports at some stage in the vacations.

3. Get Ready to Scale

No matter how many you put together for the holidays, you usually want a contingency plan to scale up or down as needed.

If you locate your workforce crushed with inquiries, you can automate e-commerce support, adding manpower hours, or outsource enterprise additives.

4.  Make Self-Service Easy

How Your eCommerce Business Can Nail Holiday Customer Service - KLCWEB

Before the vacation season arrives, make sure your procedures make it easy for potential shoppers to find what they want on their personal. Here are a few approaches to guide vacation consumers:

-> Links to FAQs
-> Video guides
-> Relevant articles

From tracking pages to complex AI-powered e-commerce support, virtual self-service is a fee-effective manner to supply quick consequences for customers. With the proper gear for your aspect, you and your online customer service team can celebrate the holidays without affecting your operations.

5. Surprise Fans with Shipping Options

Don’t limit all of the vacation cheer in your e-commerce shop. You can create a method to expand your channels, consisting of:

Online marketplaces like Amazon, eBay, and Wish
Social media pages like Facebook and Instagram
International systems such as Mercado Libre

If making a decision to open new sales streams, connect your channels for seamless transactions. It’s excellent to use a unified gadget to provide clients with a holistic experience regardless of which platform they select.

6. Develop Relevant Marketing Campaigns

From Black Friday to Cyber Monday, there are numerous possibilities to make customers experience the love at some stage in the holidays. Personalized holiday offers have many advantages, which includes:

-> Attracting massive audiences.
-> Converting random visitors into customers.
-> Reactivating inactive clients.

The season provides online enterprise owners with the possibility to boost income. According to MuchNeeded, holiday shopping accounts for 30% of all sales annually.

Elevate Your Customer Service

Your customer support and aid online play a critical position in your holiday success. Whatever strategy you select, make certain your e-commerce platform can deal with client desires.

At KLCWEB, we offer hosting solutions 20x faster than our competition, boosting load speeds, search engine marketing scores, and income. We’re right here if you need a dependable partner in prepping your enterprise for the vacations. Talk to our income crew today to learn the way we can help you and your eCommerce website!

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How To Prevent Ransomware?

I’ve been involved with InfoSec lengthy enough to have visible diverse waves of attack types be evolved, have their day within the sun, and fade, because the panorama evolved. It’s almost tough to agree with now, but once upon a time, denial of carrier assaults did now not must be hugely dispensed to be powerful; port scans could screen a wealth of open famous ports to have a laugh with (sure, Shodan suggests that is nonetheless genuine, however it’s nothing like it as soon as turned into); simple viruses and worms made their rounds and they had been defeated via incredibly simple signature-primarily based detections, and their next-era successors have been likewise frequently dispatched with behavioral evaluation or sandboxing.

For a number of attack types that burned brilliant, the tale had a pretty obvious beginning, center, and end. We all knew, of path, that as defenses became greater successful, adversaries could simply move on to something more effective; but there has been delight in seeing one of a kind malicious schemes pass through the wayside as defenders were given the higher hand in opposition to them.

It dawned on me these days that I’d been subconsciously anticipating that same crest-and-trough dynamic to play out with ransomware; a few low-degree manner in my head changed into muttering “absolutely we’re going to get our palms around this one, too.” Well, it’s truly obvious that it’s no longer gambling out that manner.

If whatever, we’re probable nevertheless on the wrong side of the crest. But, for all the frustration and struggling we’re enduring on the fingers of ransomware gangs, the basics of why we’re here aren’t complex. We realize a way to prevent ransomware, we’re just not doing it.

That may additionally sound unfairly glib, so allow me clarify. First, the announcement isn’t always supposed in judgment. Security teams are doing extraordinary work, especially in light of what the pandemic threw at them.

Yes, things are terrible, but they will be so much worse, and hearty credit is going to our protection colleagues, from practitioners to educators to vendors. What I’m driving at is that by means of and big, the reason ransomware is this kind of chronic hassle is not because it’s far technically remarkable or because vulnerabilities are immoderate.

Acknowledging that there are a few clever tools, and a few thorny vulns, the purpose ransomware is one of these stubborn problems is that it represents the distillation of units of techniques, strategies, and procedures that have been honed, streamlined, and commoditized. Its evolution mirrors organic evolution: what fails goes extinct, what works survives, and what adapts, prospers

But haven’t defenses evolved, too? They have, and in a few modern and exciting approaches. But the problem is similar to the idea of entropy: there are numerous, many special states of ailment in which an adversary can live on and attain goals, while the efficaciously defended surroundings is an ordered kingdom, and accordingly demands extra energy to maintain.

Malware and malicious actors, then, can evolve in an essentially endless quantity of methods and obtain their dreams. Defenses, then again, additionally ought to evolve, but with a extraordinarily small quantity of ordered conditions being the only safe states.

Ransomware is a Shape-Shifter

With a few exceptions, the constructing blocks of a ransomware marketing campaign, and the conditions of the victim environment important for the campaign to prevail, are very familiar. Initial access is sort of always thru phishing or a few different approach of credential theft. Lateral motion is aided via unsegment networks and uneven controls over identity and authorization.

Various stages are enabled by means of the exploitation of acknowledged, however unpatched, vulnerabilities. Recovery is hampered by inadequate backups or backups that become inflamed with the same malware that delivered the network down initially. (Recovery also now entails dealing with the capability fallout from statistics leaked or bought by means of the ransomware actors, it need to be referred to).

Almost every object in the preceding paragraph is a problem that, in and of itself, is properly understood and for which properly solutions exist. What ransomware is displaying us is that it’s miles a unprecedented surroundings in which every container is checked. It looks like a recreation of Whack-A-Mole due to the fact it is very much like that. Got correct phishing safety in vicinity? Great! But legitimate credentials can leak in different approaches. Got the whole lot patched? Rock on!

But privileges can be escalated with out exploiting a vulnerability. Got the community segmented robustly? Excellent! But what takes place whilst the stolen credentials get directly right into a “crown jewels” subnet, or when stolen creeds permit traversal of the segmented boundaries? You see the factor. Ransomware isn’t always a monolithic element. It is a form-shifter. It’s the massive-fish-formed college of small fish, each for my part easy to dispatch, however collectively packing a huge chunk.

Helpful Ransomware Resources

So in which does this go away us? Well, if there’s any silver lining to the ransomware disaster and calling it such seems reasonable. it is that it has mobilized numerous incredible work throughout both the public and the personal quarter to help all and sundry cope with it. Following are some of the assets I even have determined in particular enlightening and inspiring:

Helpful Ransomware Resources

President Biden’s Cybersecurity Executive Order: while this EO does not simply mention the word “ransomware,” it does target a number of the man or woman factors that have allowed the ransomware to proliferate.

It touches on thwarting cybercrime at its source, via things like upgrades in facts sharing, and at its vacation spot (the victim surroundings) thru improvements to cloud protection regulations and deliver chain hardening. While this is applicable to the federal authorities and now not the private zone, the private quarter will see a few tailwinds due to it.

NIST’s (National Institute of Standards and Technology) draft Cyber security Framework Profile for Ransomware Risk Management: this file takes specific additives of the NIST Framework and applies them to ransomware. This file become part of the foundation for this weblog due to the fact the person controls and practices all relate to addressing the individual TTP that make up typical ransomware campaigns.

CISA’s (Cybersecurity and Infrastructure Security Agency) new Ransomware Risk Assessment module within the CSET (Cyber Security Evaluation Tool) is a extraordinary tool for assisting organizations compare their protection posture with admire to the ransomware hazard. Some companies will especially appreciate the evaluation dashboard characteristic.

IST’s Ransomware Task Force’s record: this is the most comprehensive framework but devised especially to combat ransomware. It has large guidelines for each the private and non-private sector, prepared round 4 key goals: deterring assaults, disrupting the ransomware commercial enterprise version, supporting organizations put together, and developing extra powerful responses to ransomware attacks. It is a considerable (70+ web page) read, however worth the time.

The free Playbook Viewer from Palo Alto Networks’ Unit 42 team: this interactive tool (which isn’t always simplest centered on ransomware) offers defenders a splendid manner to come to be extra familiar with the TTP used by different corporations, and it’s prepared around the MITRE ATT&CK framework, which facilitates draw a via-line from the myriad hazard businesses that make the information, to the precise controls the blue group desires to be on pinnacle of.

KLCWEB research latest Defender’s Guide to the maximum prolific ransomware businesses, which includes a complete visual map of agencies and tooling, is another awesome way to assist maintain situational recognition in the absolute blizzard of ransomware information and articles at the Internet.

The Takeaway

None of the above assets is a silver bullet, but I hope one of the takeaways right here is that we don’t need silver bullets. We have already got technology and techniques that are recognized to be powerful towards a maximum of the TTP that compose a ransomware attack. The heightened attention at the ransomware trouble, and the superb paintings being finished to help defenders, may assist companies inside the essential paintings they do on their danger modeling and their security posture, and, ultimately, we just would possibly flip the tide. The ransomware story has had a beginning and center; with some of the work defined here, there’s a wish that it will additionally have a cease.

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Announcing Entity Framework Core 6.0 Preview 4: Performance Edition

Today, the Entity Framework Core team announces the fourth preview release of Entity Framework Core 6.0. The main theme of this release is performance – and we’ll concentrate on that below – details on getting EF Core 6.0 preview 4 are at the end of this blog post.

The short and sweet summary:

  • EF Core 6.0 performance is now 70% faster on the industry-standard Tech Empower Fortunes benchmark, compared to 5.0.
  • This is the full-stack perf improvement, including improvements in the benchmark code, the .NET runtime, etc. EF Core 6.0 itself is 31% faster executing queries.
  • Heap allocations have been reduced by 43%.

The runtime perf push

When the EF Core team started the planning process for version 6.0, we knew it was finally time to address an important area. After several years spent delivering new EF Core features, stabilizing the product and progressively narrowing the feature gap with previous versions of Entity Framework, we wanted to put an emphasis on performance and to see exactly where we could go. In previous work iterations, a lot of attention was given to the lower layers of the stack: on the industry-standard TechEmpower Fortunes benchmark, .NET already scored very high, reaching 12th place overall (running on Linux against the PostgreSQL database). But while performance was always in our minds while working on EF Core, we hadn’t done a proper optimization push at that level of the stack.

When working on perf, it’s usually a good idea to have a target you can work to, even if it’s a somewhat arbitrary one. For 6.0, the goal we set ourselves was to get as close as possible to the performance of Dapper on the Fortunes benchmark. For those unfamiliar with it, Dapper is a popular, lightweight, performance-oriented .NET object mapper maintained (and used) by the folks over at Stack Overflow; it requires you to write your own SQL and doesn’t have many of the features of EF Core – it is sometimes referred to as a “micro-ORM” – but is an extremely useful data access tool. The EF Core team loves it, and we don’t think EF Core should be the answer to every .NET data need out there. So being lightweight and performance-oriented as it is, Dapper provided us with inspiration and a number to strive to reach.

At the end of this iteration, the gap between Dapper and EF Core in the TechEmpower Fortunes benchmark narrowed from 55% to around a little under 5%. We hope this shows that EF Core can be a good option for performance-aware applications, and that ORMs and data layers aren’t necessarily “inefficient beasts” which should be avoided. It’s worth mentioning that the benchmark executes a LINQ query – not raw SQL – so many of the benefits of EF Core are being preserved (e.g. statically-typed queries!) while sacrificing very little perf.

A final, general note on performance. The numbers and improvements reported in this article are for a very specific scenario (TechEmpower Fortunes), using non-tracking queries only (no change tracking, no updates); the benchmarks were executed on a high-performance, low-latency setup. Real-world application scenarios will most probably show very different results, as the runtime overhead of executing queries would be dominated by network or database I/O times. In fact, we believe that for many real-world applications, the runtime overhead added by something like EF Core is likely to play a very minor role next to other, more important factors influencing perf. Keep this in mind when thinking about your data access.

With that out of the way, let’s dive into some of the optimizations done for EF Core 6.0. For those interested, the full list of improvements done in this optimization round is available, along with detailed measurements.

Pooling and recycling, DbContext and beyond

Recycling and pooling are central to good performance: they reduce the work needed to create and dispose resources, and typically lower heap allocations as well, which reduces pressure on the garbage collector. All EF Core users are familiar with the DbContext class – this is the main entry point for performing most operations; you can instantiate one (or get one from dependency injection), use it to perform a few database operations (“unit of work”), and then dispose it. While instantiating new DbContexts is fine in a typical application, the overhead of doing so in high-performance scenarios can be significant: DbContext works with a whole set of internal services – via an internal dependency injection mechanism – which coordinate together to make everything work; setting all that up takes time.

For this reason, EF Core has supported DbContext pooling for quite a while. The idea is simple: when you’re done with a DbContext, rather than disposing it (and all its dependent services), EF Core resets its state and then allows it to be reused later. And of course, our benchmark implementation for TechEmpower Fortunes already had this feature turned on; so… why was my profiler showing me considerable time spent creating and wiring together new DbContext instances?

In almost all cases, you want to place an upper bound on the number of instances you pool. An unbounded pool can suddenly fill up with a huge number of objects, which can take up considerably resources (memory or otherwise) and which may stick around indefinitely, depending on your pruning strategy. In the EF Core case, the default upper bound for pooled DbContext instances was 128 – going beyond that number meant falling back to instantiation and disposal. Now, while 128 should be fine for most applications – it’s not common to have 128 contexts active simultaneously – it definitely wasn’t enough for TechEmpower Fortunes; and hiking that number up to 1024 yielded a 23% improvement in benchmarkthroughput. This, of course, isn’t an improvement in EF Core itself, but it did lead us to increase the default, and we will probably start emitting a warning if the upper bound is surpassed. Finally, since DbContext pooling proved to be so important in this case, we made the feature accessible to applications not using dependency injection as well. I think this is a nice example of where even a minor benchmark misconfiguration can feed into useful product improvements.

But DbContext isn’t everything. When executing a query, EF Core makes use of various objects, including ADO.NET objects such as DbConnectionDbCommand and DbDatareader, and various internal objects for these. When all these instances showed high up in memory profiling, more recycling was clearly in order! As a result, each DbContext now has its own, dedicated set of instances of all these, which it reuses every time. This reusable graph of objects – rooted at the DbContext pool – extends all the way down into the PostgreSQL database provider (Npgsql), a good demonstration of an optimization that reaches across the layers of the stack. This change alone reduces the total bytes allocated for query execution by 22%.

Logging suppression

EF Core includes a lot of extension points, which allows users to get information about – and hook into – various stages of query execution. For example, to execute the SQL query against a relational database, EF Core calls DbCommand.ExecuteReaderAsync; it can log an event both before and after this call (allows users to see SQL statements before they get executed, and with their running times afterwards), write a DiagnosticSource event, and call into a user-configured command interceptor which allows the user to manipulate the command before it gets executed. While this provides a powerful and flexible set of extension points, this doesn’t come cheap: a single query execution has 7 events, each with 2 extension points (one before, one after). The cost of continuously checking whether logging is enabled or whether a DiagnosticListener is registered started showing up in profiling sessions!

One initial idea we considered was a global flag to disable all logging; this would be the simplest solution and would also provide the best performance possible. However, this approach had two drawbacks:

  1. It would be a sort of high-perf opt-in: it needs to be discovered and turned on. Wherever possible, we prefer to improve EF Core for everyone – out of the box.
  2. It would be all or nothing. If you, say, just want to get SQL statements logged, you can’t do that without paying the price for all the other extension points as well.

The solution we ended up implementing was to check whether any sort of logging or interception is enabled, and if not, suppress logging for that event for 1 second by default. This improved benchmark throughput by around 7% – very close to the global flag solution – while at the same time bringing the perf benefit to all EF Core users, without an opt-in. If, say, a DiagnosticListener is registered at some point during program execution, it may take up to a second for events to start appearing there; that seemed like a very reasonable trade-off for the speed-up.

Opting out of thread-safety checks

While logging suppression offered an internal optimization that’s transparent to users, our third case was different.

As hopefully everyone knows, EF Core’s DbContext isn’t thread-safe; for one thing, it encapsulates a database connection, which itself almost never allows concurrent usage. Now, although concurrent access of a DbContext instance is a programmer bug, EF Core includes an internal thread safety mechanism, which tries to detect when this happens, and throws an informative exception. This goes a long way to help EF Core users find accidental bugs, and also to make new users aware that DbContext isn’t thread-safe. This mechanism works on a best-effort basis – we made no attempt to make it detect all possible concurrency violations, since that would probably hurt performance in a significant way.

Now, the thread safety check mechanism itself didn’t show up as significant when profiling – something else did. To support some query scenarios, this check needs to be reentrant: it’s OK to start a 2nd query, as long as it’s part of the 1st query. And since EF Core supports asynchronous query execution, an AsyncLocal is used to flow the locking state across the threads that participate in the query. It turned out that using this AsyncLocal caused quite a few heap allocations to occur, and reduced benchmark throughput in a considerable way.

After some discussion, we decided to introduce an opt-out flag from thread-safety checks. Unlike with logging, there is no way for EF Core to know when the checks are needed, and when they aren’t; and we definitely want to prioritize reliability and easier debugging, so turning the check off by default was out of the question. Once users have tested that their application works well in production and they are confident that no concurrency bugs exist, they can choose to disable this particular protection; for our TechEmpower Fortunes benchmark, doing so yielded a 6.7% throughput improvement.

Closing words

None of the above is a dramatic change, or a fundamental re-designing of EF Core’s internal architecture. Fortunately, the EF Core query pipeline was already conceived with perf in mind: after a first expensive “compilation” when a query is first seen, EF Core caches both the query’s SQL and a code-generated materializer, which is the piece of code responsible for reading results from the database and instantiating your objects from them. This means that once an application reaches steady state, the heavy lifting has already been done, and EF Core has very little work left to do; and that’s how EF Core is able to perform well.

I hope the above has been an interesting read into the optimizations that have gone into EF Core 6.0, and has provided a glimpse into the internals; the full list of optimizations is available for those who want to dive deeper. To make your EF Core application perform better, please take a look at our performance docs, including this new guidance for high-perf scenarios based on this optimization effort.

What’s next? Well, performance work is never done. In addition to the above, EF Core 6.0 will also deliver other types of performance improvements, including various SQL generation improvements and optimized models, which should improve startup times for applications with lots of entities. We also have plans for continued future improvements, especially in areas of EF Core which weren’t covered in this optimization cycle (e.g. the update pipeline, change tracking).

Finally, I’d like to thank Sébastien Ros and the Crank performance infrastructure, without which this optimization work wouldn’t have been possible, and the EF Core team for their patience with me making their code more convoluted.

How to get EF Core 6.0 previews

EF Core is distributed exclusively as a set of NuGet packages. For example, to add the SQL Server provider to your project, you can use the following command using the dotnet tool:

dotnet add package Microsoft.EntityFrameworkCore.SqlServer --version 6.0.0-preview.4.21253.1

This following table links to the preview 4 versions of the EF Core packages and describes what they are used for.

Microsoft.EntityFrameworkCoreThe main EF Core package that is independent of specific database providers
Microsoft.EntityFrameworkCore.SqlServerDatabase provider for Microsoft SQL Server and SQL Azure
Microsoft.EntityFrameworkCore.SqlServer.NetTopologySuiteSQL Server support for spatial types
Microsoft.EntityFrameworkCore.SqliteDatabase provider for SQLite that includes the native binary for the database engine
Microsoft.EntityFrameworkCore.Sqlite.CoreDatabase provider for SQLite without a packaged native binary
Microsoft.EntityFrameworkCore.Sqlite.NetTopologySuiteSQLite support for spatial types
Microsoft.EntityFrameworkCore.CosmosDatabase provider for Azure Cosmos DB
Microsoft.EntityFrameworkCore.InMemoryThe in-memory database provider
Microsoft.EntityFrameworkCore.ToolsEF Core PowerShell commands for the Visual Studio Package Manager Console; use this to integrate tools like scaffolding and migrations with Visual Studio
Microsoft.EntityFrameworkCore.DesignShared design-time components for EF Core tools
Microsoft.EntityFrameworkCore.ProxiesLazy-loading and change-tracking proxies
Microsoft.EntityFrameworkCore.AbstractionsDecoupled EF Core abstractions; use this for features like extended data annotations defined by EF Core
Microsoft.EntityFrameworkCore.RelationalShared EF Core components for relational database providers
Microsoft.EntityFrameworkCore.AnalyzersC# analyzers for EF Core

We also published the 6.0 preview 4 release of the Microsoft.Data.Sqlite.Core provider for ADO.NET.

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