在Go语言中基础的Redis操作
需要先安装 redigo
go get "github.com/garyburd/redigo/redis"
Go语言Redis客户端的简单示例
连接池 POOL
为了和redis建立连接,需要创建一个redis.Pool的对象
func newPool() *redis.Pool {
return &redis.Pool{
MaxIdle: 10,
MaxActive: 12000,
Dial: func() (redis.Conn, error) {
c, err := redis.Dial("tcp", ":6379")
if err != nil {
panic(err)
}
return c, err
},
}
}
测试连接 PING
如果想测试是否连接成功，可以使用 PING 命令
func ping(c redis.Conn) error {
pong, err := c.Do("PING")
if err != nil {
return err
}
s, err := redis.String(pong, err)
if err != nil {
return err
}
fmt.Printf("PING Response = %s\n", s)
return nil
}
SET
func set(c redis.Conn) error {
_, err := c.Do("SET", "Favorite Movie", "Repo Man")
if err != nil {
return err
}
_, err = c.Do("SET", "Release Year", 1984)
if err != nil {
return err
}
return nil
}
GET
func get(c redis.Conn) error {
key := "Favorite Movie"
s, err := redis.String(c.Do("GET", key))
if err != nil {
return err
}
fmt.Printf("%s = %s\n", key, s)
key = "Release Year"
i, err := redis.Int(c.Do("GET", key))
if err != nil {
return err
}
fmt.Printf("%s = %d\n", key, i)
key = "Nonexistent Key"
s, err = redis.String(c.Do("GET", key))
if err == redis.ErrNil {
fmt.Printf("%s does not exist\n", key)
} else if err != nil {
return err
} else {
fmt.Printf("%s = %s\n", key, s)
}
return nil
}
SET STRUCT
func setStruct(c redis.Conn) error {
const objectPrefix string = "user:"
user := User{
Username: "coderminer.com",
MobileID: "12345678941",
Email: "[email protected]",
FirstName: "coderminer.com",
LastName: "coderminer.com",
}
json, err := json.Marshal(user)
if err != nil {
return err
}
_, err = c.Do("SET", objectPrefix+user.Username, json)
if err != nil {
return err
}
return nil
}
GET STRUCT
func getStruct(c redis.Conn) error {
const objectPrefix string = "user:"
username := "coderminer.com"
s, err := redis.String(c.Do("GET", objectPrefix+username))
if err == redis.ErrNil {
fmt.Println("User does not exist")
} else if err != nil {
return err
}
user := User{}
err = json.Unmarshal([]byte(s), &user)
fmt.Printf("%+v\n", user)
return nil
}
最终的代码
package main
import (
"encoding/json"
"fmt"
"github.com/garyburd/redigo/redis"
)
type User struct {
Username string
MobileID string
Email string
FirstName string
LastName string
}
func newPool() *redis.Pool {
return &redis.Pool{
MaxIdle: 10,
MaxActive: 12000,
Dial: func() (redis.Conn, error) {
c, err := redis.Dial("tcp", ":6379")
if err != nil {
panic(err)
}
return c, err
},
}
}
func ping(c redis.Conn) error {
pong, err := c.Do("PING")
if err != nil {
return err
}
s, err := redis.String(pong, err)
if err != nil {
return err
}
fmt.Printf("PING Response = %s\n", s)
return nil
}
func set(c redis.Conn) error {
_, err := c.Do("SET", "Favorite Movie", "Repo Man")
if err != nil {
return err
}
_, err = c.Do("SET", "Release Year", 1984)
if err != nil {
return err
}
return nil
}
func get(c redis.Conn) error {
key := "Favorite Movie"
s, err := redis.String(c.Do("GET", key))
if err != nil {
return err
}
fmt.Printf("%s = %s\n", key, s)
key = "Release Year"
i, err := redis.Int(c.Do("GET", key))
if err != nil {
return err
}
fmt.Printf("%s = %d\n", key, i)
key = "Nonexistent Key"
s, err = redis.String(c.Do("GET", key))
if err == redis.ErrNil {
fmt.Printf("%s does not exist\n", key)
} else if err != nil {
return err
} else {
fmt.Printf("%s = %s\n", key, s)
}
return nil
}
func setStruct(c redis.Conn) error {
const objectPrefix string = "user:"
user := User{
Username: "coderminer.com",
MobileID: "12345678941",
Email: "[email protected]",
FirstName: "coderminer.com",
LastName: "coderminer.com",
}
json, err := json.Marshal(user)
if err != nil {
return err
}
_, err = c.Do("SET", objectPrefix+user.Username, json)
if err != nil {
return err
}
return nil
}
func getStruct(c redis.Conn) error {
const objectPrefix string = "user:"
username := "coderminer.com"
s, err := redis.String(c.Do("GET", objectPrefix+username))
if err == redis.ErrNil {
fmt.Println("User does not exist")
} else if err != nil {
return err
}
user := User{}
err = json.Unmarshal([]byte(s), &user)
fmt.Printf("%+v\n", user)
return nil
}
func main() {
pool := newPool()
conn := pool.Get()
defer conn.Close()
err := ping(conn)
if err != nil {
fmt.Println(err)
}
err = set(conn)
if err != nil {
fmt.Println(err)
}
err = get(conn)
if err != nil {
fmt.Println(err)
}
err = setStruct(conn)
if err != nil{
fmt.Println(err)
}
err = getStruct(conn)
if err != nil{
fmt.Println(err)
}
}