Varnish is a web app accelerator platform, which caches content for faster response times. It’s occasionally referred to as a caching HTTP reverse proxy too and it interacts between a web server and an Internet browser. When a website visitor opens a particular web page, the content is requested by the Internet browser, and then the server handles this request and returns the needed information. If Varnish is activated for a specific site, it will cache the pages on the first request and if the user accesses a cached page once again, the information will be delivered by the caching platform instead of the server. The accelerated load speed is an end result of the considerably faster response time that the Varnish platform offers compared with any web server software. Of course, this does not mean that the visitors will continue seeing the exact same content over and over again, since any change on any of the pages is reflected in the content that Varnish caches in its system memory.
Varnish in Shared Hosting
If you host your sites in a shared hosting account with us, you will be able to add Varnish with a few clicks from your Control Panel. The content caching platform is available as an upgrade with all our hosting packages and you can select the number of the sites that will use it and the total storage space that will be available for the cached data. The two upgradeable features in the Upgrades section of the Control Panel are the number of instances and the amount of system memory and they are not directly tied to each other, so you can choose whether you want lots of memory for one single large-sized site or less memory for several smaller ones. You can unleash the full potential of the Varnish caching platform if the sites use a dedicated IP. With the Control Panel, you can swiftly start/restart/remove an instance, clear the cached contents individually for each site which employs Varnish or view a comprehensive log.