linux - redis连接池应用在一万并发下时连接数只有2？

Question

如图所示，我用golang的redigo库写了一个redis连接池，用ab测试模拟一万并发读操作，但是redis无论怎么刷新info，连接数一直是2，最多也只显示了4，但是使用写操作有六十多的连接数，同时netstat-ano显示确实有大...

phpcn_u1582 · Answer

嫌连接池没被占用？

这样写

package main

import "github.com/garyburd/redigo/redis"
import (
    "flag"
    "fmt"
    "time"
)

func newPool(addr string) *redis.Pool {
    return &redis.Pool{
        MaxIdle:     30,
        IdleTimeout: 240 * time.Second,
        Dial:        func() (redis.Conn, error) { return redis.Dial("tcp", addr) },
    }
}

var (
    pool        *redis.Pool
    redisServer = flag.String("redisServer", ":6379", "")
)

func main() {
    flag.Parse()
    pool = newPool(*redisServer)
    fmt.Println(pool)
    conn := pool.Get()
    conn2 := pool.Get()
    conn3 := pool.Get()
    conn4 := pool.Get()
    conn.Do("get", "a")
    conn2.Do("get", "a")
    conn3.Do("get", "a")
    conn4.Do("get", "a")
    //这里使劲加connX，就能看到效果了
    //defer conn.Close()
    //defer conn2.Close()
    //defer conn3.Close()
    //defer conn4.Close()

    time.Sleep(100 * time.Second)
}