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Choice of cache store to be used can be made while configuring cache configs. Http Cache invalidation is based on sling job defined at ) has been provided OOTB.
Custom cache store should implement Http Cache Store (com.commons.httpcache.store. JMX beans exposed to instrument the http cache for the following 2 components.
I’m sure you’ve saved something in Magento’s admin area and seen that a cache got invalidated - whether it was modifying a Mailchimp setting, or refreshed some indexes.
Saving one or two database queries doesn’t sound like a significant performance gain, but using widgets or blocks that perform complex tasks isn't uncommon.In addition to being twice as fast as the default caching implementation it also supports better cache invalidation, which means that your website will appear more up-to-date. The default cache implementation can respond in 0.02s compared to varnishes 0.01s - the difference here is imperceptible - but varnish will scale better and supports better invalidation.For a caching server to serve pages to your users, it will need to “pretend” to be the web server.Varnish is a HTTP caching proxy server which can be used to radically improve the response time of your website.
Sulu is bundled with a “soft” caching proxy, the Symfony Http Cache, but using Varnish is a more optimal solution for a large website, especially if it has lots of traffic.Rails provides a set of caching features out of the box.