Imports github.com/launchdarkly/eventsource github.com/blang/semver github.com/gregjones/httpcache github.com/facebookgo/httpcontrol github.com/garyburd/redigo/redis github.com/patrickmn/go-cache Standard library imports crypto/sha256 crypto/sha1 bytes crypto/hmac encoding/hex encoding/json errors fmt io io/ioutil log math/rand net/http os reflect regexp strconv strings sync time