v0.13.0

Full Changelog: v0.13.0...v0.13.0

Add support to rate-limit by custom key from HTTP handler (e.g. by request payload fields)

// Rate-limiter for login endpoint.
loginRateLimiter := httprate.NewRateLimiter(5, time.Minute)

r.Post("/login", func(w http.ResponseWriter, r *http.Request) {
	var payload struct {
		Username string `json:"username"`
		Password string `json:"password"`
	}
	err := json.NewDecoder(r.Body).Decode(&payload)
	if err != nil || payload.Username == "" || payload.Password == "" {
		w.WriteHeader(400)
		return
	}

	// Rate-limit login at 5 req/min.
	if loginRateLimiter.OnLimit(w, r, payload.Username) {
		return
	}

	w.Write([]byte("login at 5 req/min\n"))
})