Go实现Redis连接池方法

package main
​
import (
    "fmt"
    "github.com/garyburd/redigo/redis"
    "strconv"
    "time"
)
​
func main() {
    pool := &redis.Pool{
        // Maximum number of connections allocated by the pool at a given time.
        // When zero, there is no limit on the number of connections in the pool.
        //最大活跃连接数，0代表无限
        MaxActive: 888,
        //最大闲置连接数
        // Maximum number of idle connections in the pool.
        MaxIdle: 20,
        //闲置连接的超时时间
        // Close connections after remaining idle for this duration. If the value
        // is zero, then idle connections are not closed. Applications should set
        // the timeout to a value less than the server's timeout.
        IdleTimeout: time.Second * 100,
        //定义拨号获得连接的函数
        // Dial is an application supplied function for creating and configuring a
        // connection.
        //
        // The connection returned from Dial must not be in a special state
        // (subscribed to pubsub channel, transaction started, ...).
        Dial: func() (redis.Conn, error) {
            return redis.Dial("tcp","127.0.0.1:6379"),
        }
    }
    //延迟关闭连接池
    defer pool.Close()
    //IO并发连接
    for i:=0;i<10;i++{
        go getConnFromPoolAndHappy(pool,i)
    }
    //保持主协程存活
    time.Sleep(3*time.Second)
​
}
​
func getConnFromPoolAndHappy(pool *redis.Pool, i int)  {
    //通过连接池获得连接
    conn := pool.Get()
    //延时关闭连接
    defer conn.Close()
    //使用连接操作数据
    reply, err := conn.Do("set", "conn"+strconv.Itoa(i), i)
    s, _ := redis.String(reply, err)
    fmt.Println(s)
}

Dial: func() (redis.Conn, error) {
   return redis.Dial("tcp", "127.0.0.1:6379")
}

go getConnFromPoolAndHappy(pool,i)

time.Sleep(3*time.Second)

conn := pool.Get()

reply, err := conn.Do("set", "conn"+strconv.Itoa(i), i)
 s, _ := redis.String(reply, err)
 fmt.Println(s)

pool := &redis.Pool