Varnish is a web app accelerator tool, which has been gaining a lot of popularity in recent years, because it can increase the speed of any Internet site, at times even by 100 percent, based on the content itself. This tool is sometimes referred to as a caching HTTP reverse proxy too and is used to decrease the overall server load and to enhance the browsing speed for the site visitors. Each time a visitor opens a page on a certain site, the web browser request is taken care of by the web server and the requested info is delivered as a response. If the Varnish accelerator is enabled, it caches the pages that the website visitor browses and if any of them is opened once again, it is fetched by Varnish and not by the server directly. The boost in the overall performance is due to the fact that the accelerator processes the browser requests significantly quicker than any web server, which results in much faster browsing speeds for the website visitors. In case any data is modified in the meantime, the cached webpages will also be updated the next time somebody attempts to access them.
Varnish in Shared Hosting
If you host your Internet sites in a shared hosting account with us, you’ll be able to activate Varnish with a few mouse clicks through your hosting Control Panel. The data 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 amount of memory and the number of instances and they’re not tied directly to each other, so you can choose if you need lots of memory for one single large-sized website or less memory for several smaller ones. You can unleash the full potential of Varnish if the sites use a dedicated IP. Using the Control Panel, you can effortlessly start/reboot/cancel an instance, delete the cached content independently for each website that uses the Varnish platform or see a detailed system log file.