Safe Haskell	Safe-Infered

Network.Wai.Middleware.Cache

Contents

Backend
Middleware

Description

Transparent front cache middleware for Wai.

Instead caching internal data, this middleware caches entire responses. Of course, this creates additional costs. However, the simplification of the internal structure and concentration of caching in the immediate vicinity of the request is more than redeem them.

 cache (debugBackend True)
       ourFrivolousApplication

Synopsis

Backend

type CacheBackend Source

Arguments

= Application	Application
-> Request	Request
-> ResourceT IO (Maybe Response)

Abstract cache backend. Result may be Nothing you need to respond wirh status 304 - Not Modified.

Middleware

cache Source

Arguments

:: CacheBackend	Cache backend.
-> Middleware

Cache middleware. Use it with conjuction with CacheBackend.

 -- Simplest backend. Suggests @304 - Not Modified@ with site root.
 rootBackend app req = do 
     case rawPathInfo req of
         "/" -> return Nothing
         _ -> do
             res <- app req 
             return $ Just res