Golang中使用redis
使用Redis：
使用redis进程池，减少与redis-server 的 socket 连接，直接上代码：
package redis
import (
"github.com/garyburd/redigo/redis"
"github.com/astaxie/beego"
"time"
"fmt"
)
var (
// 定义常量
RedisClient *redis.Pool
REDIS_HOST string
REDIS_DB int
)
func init() {
// 从配置文件获取redis的ip以及db
REDIS_HOST := beego.AppConfig.String("prod::REDIS_HOST")
REDIS_DB, _ = beego.AppConfig.Int("prod::REDIS_DB")
// 建立连接池
RedisClient = &redis.Pool{
// 从配置文件获取maxidle以及maxactive，取不到则用后面的默认值
MaxIdle: 1,
MaxActive: 10,
IdleTimeout: 180 * time.Second,
Dial: func() (redis.Conn, error) {
c, err := redis.Dial("tcp", REDIS_HOST)
if err != nil {
return nil, err
}
// Auth 有密码的话需要做认证哦～
c.Do("AUTH","密码")
// 选择db
c.Do("SELECT", REDIS_DB)
return c, nil
},
}
}
// 增加某张照片点赞Inc；增加照片点赞用户列表；增加用户喜欢的照片列表；管道操作
func IncPhotoLike(photoId string,uid string) {
rc := RedisClient.Get()
defer rc.Close()
photoCount := "PhotoLikeCount" + photoId
photoSet := "PhotoLike" + photoId
userLikeSet := "UserLikePhoto"+ uid
rc.Send("INCR",photoCount)
rc.Send("SADD",photoSet,uid)
rc.Send("SADD",userLikeSet,photoId)
rc.Flush()
v,err := rc.Receive()
if err!=nil {
panic(err)
}
fmt.Println("INCR",v)
}
// 获取某用户喜欢过的所有照片
func GetUserLikeSet(uid string) (result string) {
rc := RedisClient.Get()
defer rc.Close()
res,err := redis.Values(rc.Do("SMEMBERS","UserLikePhoto"+uid))
if err!=nil {
panic(nil)
}
resStr := ""
for _, v := range res {
fmt.Printf("%s ", v.([]byte))
resStr += string(v.([]byte))+","
}
return resStr
}
// 查看用户是否喜欢这张照片
func IsUserLikePhoto(uid string,Pid string) (IsLike int64) {
rc := RedisClient.Get()
defer rc.Close()
res,err := rc.Do("SISMEMBER","UserLikePhoto"+uid,Pid)
if err!=nil {
panic(nil)
}
return res.(int64)
}
使用管道提交
不使用管道提交
rc := RedisClient.Get()
defer rc.Close()
currentTimeStart := time.Now()
for i:=0 ;i<100000;i++{
fmt.Println(i)
rc.Do("INCR","TESTKEY")
}
currentTimeEnd := time.Now()
fmt.Println(currentTimeStart)
fmt.Println(currentTimeEnd)
999
2018-12-11 10:56:39.631781548 +0800 CST m=+5.762551128
2018-12-11 10:56:39.731172184 +0800 CST m=+5.861938782
9999
2018-12-11 10:57:48.648119563 +0800 CST m=+2.779452059
2018-12-11 10:57:49.664007439 +0800 CST m=+3.795309460
99999
2018-12-11 10:58:15.006840374 +0800 CST m=+3.051498224
2018-12-11 10:58:23.793490127 +0800 CST m=+11.837884394
管道
func TestPipline() {
rc := RedisClient.Get()
defer rc.Close()
currentTimeStart := time.Now()
for i:=0 ;i<100000;i++{
fmt.Println(i)
rc.Send("INCR","TESTKEY")
}
rc.Flush()
rc.Receive()
currentTimeEnd := time.Now()
fmt.Println(currentTimeStart)
fmt.Println(currentTimeEnd)
}
99999
2018-12-11 11:03:09.416745233 +0800 CST m=+11.625497498
2018-12-11 11:03:09.962783858 +0800 CST m=+12.171518442
可以看到10w次，管道提交只要0.5s ，非管道提交长达8s ，在一些多任务的业务中，可以使用管理来减少时间
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