Varnish is a web application accelerator tool, which has been gaining a lot in popularity in recent years, as it can increase the speed of any site, at times even by one hundred percent, based on the content. This tool is sometimes referred to as a caching HTTP reverse proxy too and is used to reduce the overall load on the server and to enhance the access speed for the site visitors. Whenever a visitor accesses a page on a specific site, the web browser request is handled by the web server and the requested content is sent as a response. If the Varnish accelerator is enabled, it caches the web pages that the website visitor browses and in case any of them is opened once again, it is fetched by Varnish and not by the web server directly. The performance improvement comes from the fact that the accelerator processes the web requests tremendously faster than any web server, which results in much faster browsing speeds for the users. In case any content is modified in the meantime, the cached pages will also be updated the next time someone tries to access them.
Varnish in Shared Hosting
If you host your websites under a shared hosting account with us, you’ll be able to add Varnish with several clicks of the mouse from your hosting Control Panel. The platform comes as an upgrade with all our plans and you can select the number of the websites that will use it and the total amount of system memory that will be used for the cached content. The two upgradeable features in the Upgrades section of the Control Panel are the number of instances and the amount of memory and they’re not linked directly to each other, so you can decide whether you need lots of memory for a single large-scale website or less memory for several smaller ones. You can unleash the full potential of the Varnish caching platform in case the sites use a dedicated IP address. Using the hosting Control Panel, you can swiftly start/reboot/terminate an instance, clear the cached files independently for each website that uses Varnish or see a comprehensive system log file.