Package ruleset provides the basics rules which are being extended by rules.

Cache accepts the cache expiration duration if the expiration <=2 seconds then expiration is taken by the "cache-control's maxage" header returns context.Handler, which you can use as your default router or per-route handler All types of response can be cached, templates, json, text, anything.

Handler accepts one single parameter: the cache expiration duration if the expiration <=2 seconds then expiration is taken by the "cache-control's maxage" header returns context.Handler.

ExpiresHeaderKey is the header key of "Expires".

ExpiresNeverHeaderValue is the header value of "ExpiresHeaderKey": "0".

PragmaHeaderKey is the header key of "Pragma".

PragmaNoCacheHeaderValue is the header value of "Pragma": "no-cache".

Cache304 sends a `StatusNotModified` (304) whenever the "If-Modified-Since" request header (time) is before the time.Now() + expiresEvery (always compared to their UTC values).

CacheControlHeaderValue is the header value of the "Cache-Control": "private, no-cache, max-age=0, must-revalidate, no-store, proxy-revalidate, s-maxage=0".

ETag is another browser & server cache request-response feature.

NoCache is a middleware which overrides the Cache-Control, Pragma and Expires headers in order to disable the cache during the browser's back and forward feature.

StaticCache middleware for caching static files by sending the "Cache-Control" and "Expires" headers to the client.