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Informations about the package fullpagecache
Full Page Cache
This package is meant to cache full HTTP responses for super fast delivery time. It currently works with Neos but a plan is there to provide the functionality for Flow as well.
It works by checking if a page is fully cachable and in that case caching the whole HTTP response and delivering it immediately. So this won't have much effect on websites with uncached elements on every page. Also POST requests and requests with query arguments are excluded from caching, as well as requests that set cookies. So if you don't see a difference after installing, these are things to look out for.
Settings
Two settings are available to you to influence the behavior.
You can also move the cache backend to something faster if available, to improve performance even more.
How it works
The package defines two http middlewares:
-
RequestCacheMiddleware: If a request is cacheable the cache is asked first and only if no response is found the request is passed down the middleware chain. The cache lifetime and tags are determined from theX-FullPageCache-Enabled,X-FullPageCache-LifetimeandX-FullPageCache-Tagsthat are set by upstream middlewares or controllers. Additionally the middleware addsETagandCache-ControlHeaders taking the lifetime and settingmaxPublicCacheTimeinto account. FusionAutoconfigurationMiddleware: Connects to the fusion cache and extracts tags plus the allowed lifetime which is then stored in the response headersX-FullPageCache-Enabled,X-FullPageCache-LifetimeandX-FullPageCache-Tags. This component is only active if the headerX-FullPageCache-EnableFusionAutoconfigurationis present in the response which is set automatically forNeos.Neos:Page.
Custom controllers that want to control the caching behavior directly can set the headers X-FullPageCache-Enabled,
X-FullPageCache-Lifetime and X-FullPageCache-Tags directly while fusion based controllers can enable the autoconfiguration
by setting the header X-FullPageCache-EnableFusionAutoconfiguration.
Warning
This package is still fairly new, if you install it, make sure to check really well if your page still works. Especially things like Forms and plugins. Ideally those pages should work but just not be faster unlike pure content pages. Still this was tested in limited scenarios so far, so make sure you tested properly before bringing this to production. It has no effect on the content itself, so deinstalling it will bring you back to the state you had before.
