Varnish is a web app accelerator platform, which caches information for the sake of faster response times. It’s sometimes called a caching HTTP reverse proxy as well and it interacts between a web server and a browser. When a visitor loads a specific webpage, its content is requested by the web browser, and then the server handles this browser request and delivers the requested content. If Varnish is activated for a particular site, it will cache the pages at the first request and in case the visitor accesses a cached page once again, the content will be delivered by the caching platform and not by the server. The boosted loading speed is a result of the considerably faster response speed that the Varnish platform offers as compared to any web server software. At the same time, this doesn’t mean that the users will keep seeing the same content again and again, as any change on any of the pages is reflected in the content that Varnish stores in its system memory.
Varnish in Website Hosting
If you host your websites under a website hosting account with our company, you’ll be able to add Varnish with a couple of clicks through your Control Panel. The platform is available as an upgrade with all our shared 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 tied to each other, so you can decide whether you need plenty of memory for a single large-size site or less memory for several smaller ones. You can unlock the full potential of the Varnish platform in case the sites use a dedicated IP address. Using the hosting Control Panel, you can effortlessly start/restart/shut down an instance, delete the cached contents individually for each website that employs Varnish or see an elaborate log.