Awesome

httpcache

httpcache provides an rfc7234 compliant golang http.Handler.

Example

This example is from the included CLI, it runs a caching proxy on http://localhost:8080.

proxy := &httputil.ReverseProxy{
    Director: func(r *http.Request) {
    },
}

handler := httpcache.NewHandler(httpcache.NewMemoryCache(), proxy)
handler.Shared = true

log.Printf("proxy listening on http://%s", listen)
log.Fatal(http.ListenAndServe(listen, handler))

Implemented

All of rfc7234, except those listed below
Disk and Memory storage
Apache-like logging via httplog package

Todo

Offline operation
Size constraints on memory/disk cache and cache eviction
Correctly handle mixture of HTTP1.0 clients and 1.1 upstreams
More detail in Via header
Support for weak entities with If-Match and If-None-Match
Invalidation based on Content-Location and request method
Better handling of duplicate headers and CacheControl values

Caveats

Conditional requests are never cached, this includes Range requests

Testing

Tests are currently conducted via the test suite and verified via the CoAdvisor tool.