gorilla/context is a general purpose registry for global request variables.
Note: gorilla/context, having been born well before
context.Contextexisted, does not play well with the shallow copying of the request that
http.Request.WithContext(added to net/http Go 1.7 onwards) performs. You should either use just gorilla/context, or moving forward, the new
Read the full documentation here: http://www.gorillatoolkit.org/pkg/context