Varnish is a data caching platform, which is sometimes referred to as a caching HTTP reverse proxy. It’s a web application accelerator tool that can accelerate the load speed of a site by up to one thousand percent, based on its content. Whenever a visitor opens any page on a site that uses Varnish, the platform caches the page and delivers it instead of the web server if the visitor loads it again. In this way, the browser request from the visitor is not handled by the server and the web page will open significantly faster, as the Varnish platform can serve information many times faster than any web server software. The result is a considerably faster loading site, which means an improved visitor experience. In case any of the cached pages is updated on the live site, the info that Varnish stores in its system memory is updated as well, so the website visitors will never see out-of-date information.
Varnish in Shared Hosting
In case you host your websites in a shared hosting account with us, you will be able to add Varnish with several clicks from your hosting Control Panel. The caching platform is offered as an upgrade with all our shared web hosting plans and you can select how many sites will use it and the maximum amount of system memory that will be used for the cached data. The two features that can be upgraded in the Upgrades section of the Control Panel are the number of instances and the amount of system memory and they are not directly linked to each other, so you can choose if you want plenty of memory for one single large-scale site or less memory for several smaller ones. You can make use of the full potential of Varnish if the sites use a dedicated IP address. With the hosting Control Panel, you can quickly start/restart/discontinue an instance, clear the cached data individually for each site that uses the Varnish platform or view a detailed log file.