Varnish is a web app accelerator tool, which has been gaining a lot of popularity lately, as it can increase the speed of any Internet site, at times even by 100%, based on the content. This tool is sometimes called an HTTP reverse proxy too and is used to decrease the overall load on the physical server and to increase the browsing speed for the website visitors. Whenever a visitor accesses a page on a given Internet site, the browser request is processed by the web server and the requested information is returned as a response. If Varnish is enabled, it caches the web pages that the site visitor opens and in case any of them is opened once again, it’s served by Varnish and not by the server directly. The performance increase is due to the fact that the accelerator processes the browser requests substantially quicker than any web server, which leads to much faster browsing speeds for the visitors. If any content is modified in the meantime, the cached pages will also be updated the next time somebody opens them.
Varnish in Cloud Hosting
In case you host your Internet sites in a cloud hosting account with us, you will be able to add Varnish with a few clicks from your Control Panel. The platform comes as an upgrade with all our shared hosting packages and you can choose how many sites will use it and the total amount of system memory that will be used for the cached data. The two features that can be upgraded in the Control Panel’s Upgrades section are the number of instances and the amount of system memory and they’re not directly linked to each other, so you can decide if you need plenty of memory for one large-size website or less memory for several smaller ones. You can take advantage of the full potential of the Varnish platform in case the sites use a dedicated IP. With the hosting Control Panel, you can easily start/restart/disable an instance, delete the cached files independently for each site which uses Varnish or view an exhaustive log.