echo_limiter using redis as store for rate limit with two algorithms for choosing sliding window, gcra leaky bucket
go get github.com/shareed2k/echo_limiter package main import ( "log" "net/http" "time" "github.com/go-redis/redis/v7" "github.com/labstack/echo/v4" limiter "github.com/shareed2k/echo_limiter" ) func main() { e := echo.New() option, err := redis.ParseURL("redis://127.0.0.1:6379/0") if err != nil { log.Fatal(err) } client := redis.NewClient(option) _ = client.FlushDB().Err() // 3 requests per 10 seconds max cfg := limiter.Config{ Rediser: client, Max: 3, Burst: 3, Period: 10 * time.Second, Algorithm: limiter.GCRAAlgorithm, } e.Use(limiter.NewWithConfig(cfg)) e.GET("/", func(c echo.Context) error { return c.String(http.StatusOK, "Hello, World!") }) e.Logger.Fatal(e.Start(":3000")) }curl http://localhost:3000 ... < HTTP/1.1 200 OK < Date: Fri, 03 Apr 2020 13:02:02 GMT < Content-Type: text/plain; charset=utf-8 < Content-Length: 8 < X-Ratelimit-Limit: 3 < X-Ratelimit-Remaining: 2 < X-Ratelimit-Reset: 1585918925 ... curl http://localhost:3000 curl http://localhost:3000 curl http://localhost:3000 ... < HTTP/1.1 429 Too Many Requests < Date: Fri, 03 Apr 2020 13:02:29 GMT < Content-Type: text/plain; charset=utf-8 < Content-Length: 42 < Retry-After: 1585918951 ...