58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
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package main
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import (
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"fmt"
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"github.com/go-redis/redis"
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)
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// redis
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// 与mysql类似，也是一个连接池对象
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var redisdb *redis.Client
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func initRedis() (err error) {
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//这里不要声明为局部变量
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redisdb = redis.NewClient(&redis.Options{
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Addr: "43.143.245.135:6379",
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Password: "ningzaichun",
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DB: 0,
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})
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pong, err := redisdb.Ping().Result()
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if err != nil {
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return err
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}
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fmt.Println("pong", pong)
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return nil
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}
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func main() {
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err := initRedis()
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if err != nil {
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fmt.Println("connect redis failed", err)
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return
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}
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fmt.Println("redis connect success")
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//zset
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key := "rank"
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languages := []redis.Z{
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{Score: 90.0, Member: "Golang"},
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{Score: 98.0, Member: "Java"},
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{Score: 95.0, Member: "Python"},
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{Score: 97.0, Member: "JavaScript"},
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{Score: 99.0, Member: "C/C++"},
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}
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//把元素追加到key
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num, err := redisdb.ZAdd(key, languages...).Result()
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if err != nil {
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fmt.Println("add languages failed", err)
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}
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fmt.Println("add languages success", num)
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//给Golang加10分
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newScore, err := redisdb.ZIncrBy(key, 10, "Golang").Result()
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if err != nil {
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fmt.Printf("zincrby failed, err:%v\n", err)
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return
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}
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fmt.Printf("Golang's score is %f now.\n", newScore)
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}
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