HTTPCachingHandler middleware that provides HTTP level caching using the If-None-Match header.

NotModified checks the requests If-None-Match header for a matching CurrentSHA in the Client.

SetCacheHeaders ensure response is not cached on the client.

CacheControl ensure no client-side or proxy caching.

CacheControlHeader sets the caches control header for the response.

EtagHeader header used to pass the CurrentSHA in responses.

Expires ensure no client-side caching.

ExpiresHeader sets the expires header for the response.

IfNoneMatchHeader http header containing the clients CurrentSHA.

LastModified date when the feature set was last updated.

Pragma ensure no client-side caching.

PragmaHeader sets the pragma header for the response.