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The Benefits of Using Varnish Cache on Website Speed and Performance

When you request a website page in a web browser, it involves some steps. The browser sends the request to the server, the server returns the assets, and the browser finally provides a response. But in reality, the performance is not that simple. Varnish cache is one of the technologies that web servers use to provide content faster. This technology is a reverse proxy. We prepared this article and discussed the benefits of using Varnish Cache on website speed and performance.

What is Varnish Cache?

As mentioned in the introduction, Varnish is a reverse proxy and works by storing a copy of the page in memory and serving it when you want to revisit the page. The basis for choosing this copy is based on request headers such as URL and request method, which is also calling page cache.

With the help of Varnish cache, you no longer need to reload the pages of your online store, and this is very beneficial for you because you will have a lightning-fast online store. We suggest that you use the Windows VPS server plans provided on our website to launch your website and run Varnish Cache on it. When you request a web page, you’ll see the cached version instead of waiting for the original web server to generate it from scratch. This reduces loading and makes websites more responsive, thus improving the user experience. It should also be noted that Varnish helps you control how pages are cached using HTTP cache control headers.

What are the Benefits of Varnish Cache on Website Speed and Performance?

Varnish Cache is used for both static and dynamic content. This applicable solution is an excellent way to increase not only your website speed but also your performance:

benefits of varnish cache on website

Benefits of Varnish Cache on Website Speed

One of the most impressive advantages that varnish provides is a speed boost for your website. The reason for this effect is due to the following:

– When delivering objects, the cache server acts faster than the origin server because the workload is less intensive and varied on the first one.

– The Cache server provides assets that don’t change frequently. These can be files like CSS and Javascript. So, it causes a reduction in the burden on the origin server.

– The processing time for the backend server database is lower and it causes a decrease in the TTFB (Time to First Byte).

– When the server is experiencing downtime, the varnish can act as part of a highly available environment that serves cache content.

– When the original server becomes unavailable, Varnish cache can continue to serve cached content and provide users with some access to the site instead of a complete outage.

– Varnish Cache can accelerate HTTP requests by handling tasks such as compression, SSL termination, and connection pooling. This frees up your web server to focus on generating dynamic content.

– Varnish Cache can reduce network latency by serving content from servers that are physically closer to the user.

– Search engines, like Google, consider website speed as a factor when ranking search results. websites with faster loading shows higher rank in search engine results pages, leading to increased organic traffic.

Benefits of Varnish Cache on Website Performance

The level of performance which is associated with Varnish cache, is one of the prime advantages of using this app. Let’s see what can be the benefits of Varnish for your website performance:

– Varnish Cache can be deployed on multiple servers or instances, distributing the caching load and enhancing the overall scalability of your web infrastructure. This is particularly useful for handling traffic spikes and high loads.

– Varnish allows you to set rules for cache expiration and cache invalidation. This ensures that when content changes on your website, the old cached versions are automatically removed, and users receive the most up-to-date content.

– Varnish can act as an SSL/TLS termination point, offloading the encryption and decryption workload from your web servers. This can improve performance by allowing your web servers to focus on serving content rather than handling encryption.

– Varnish allows you to proactively load certain content into the cache before it’s even requested. This can be especially useful for anticipating traffic spikes or for ensuring that critical content is readily available.

– Varnish Cache offers extensive configuration options that allow you to fine-tune caching behavior to match your specific website’s needs. This includes setting cache lifetimes and defining cache variations based on headers, cookies, and so on.

– Varnish is capable of caching both static and dynamic content. It can intelligently cache dynamic content by respecting certain rules or parameters, enabling you to serve frequently requested dynamic pages faster without constantly hitting your application server.

– By serving cached content directly from memory, Varnish Cache offloads a significant portion of the requests from your web server.


As we mentioned in this article, you can use Varnish Cache to boost your website’s speed and performance. The benefits of Varnish Cache on your website can be more than what we presented here, but these two are significant. Varnish configuration is complicated and needs specialist knowledge but it is worthwhile because, with the right parameters, a great performance boost will be achieved. we hope you enjoyed this content.


Is varnish still using on websites?

Yes, many providers use Varnish as part of their technology stack and make it a vital part of the modern web infrastructure.

Is it possible to cache dynamic contents by Varnish?

Varnish caches all the server responses and refreshes every two minutes. So, yes, it helps with caching dynamic content.

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