Golang的几种限流 package的用法_go redis_rate

go.uber.org/ratelimit

package rlimit
 
import (
    "fmt"
    "log"
    "testing"
    "time"
 
    "go.uber.org/ratelimit"
)
 
func TestRatelimit(t *testing.T) {
    rl := ratelimit.New(5) // per second
 
    log.Println("begin")
    prev := time.Now()
    for i := 0; i < 20; i++ {
        now := rl.Take()
        if i > 0 {
            fmt.Println(time.Now().String(), i, now.Sub(prev))
        }
        prev = now
    }
 
    log.Println("end")
}

运行结果：

[@hbhly_x_128 rlimit]$ go test -v ./
=== RUN   TestRatelimit
2022/03/26 16:57:41 begin
2022-03-26 16:57:42.014050639 +0800 CST m=+0.201108898 1 200ms
2022-03-26 16:57:42.21436404 +0800 CST m=+0.401422303 2 200ms
2022-03-26 16:57:42.415431893 +0800 CST m=+0.602490176 3 200ms
2022-