Network.Wai.Middleware.Cache

Documentation

cache

Arguments

:: CacheBackend cc ck cv

A cache backend

-> Middleware

cacheNoBody

Arguments

:: CacheBackend cc ck cv

A cache backend

-> Middleware

data CacheBackend cacheContainer cacheKey cacheVal

The data structure that should contains everything you need to create a cache backend

Constructors

CacheBackend

Fields

• keyFromReq :: Request -> ByteString -> IO cacheKey

  Get cacheKey from request and its body

• toCache :: Request -> ByteString -> IO Bool

  Function to check whether cache or not

• addToCache :: cacheContainer -> cacheKey -> cacheVal -> IO ()

  Adding to cache

• actionOnCache :: Request -> Response -> IO ()

  Action to perform before each caching request

• actionOnCacheMiss :: Request -> Response -> IO ()

  Action to perfom before each cache miss

• responseToCacheVal :: Response -> IO cacheVal

  Transform response to cached value

• cacheValToResponse :: cacheVal -> Response

  Transform cached value to response

• lookupCache :: cacheContainer -> cacheKey -> IO (Maybe cacheVal)

  cache lookup

• cacheContainer :: cacheContainer

  A cache container

responseToLBS :: Response -> IO ByteString

Helper for your cache backend