golang中使用redis

golang中比較好用的第三方開源redisclient有:

• go-redis
  • 源碼地址：https://github.com/go-redis/redis
  • 文檔地址：http://godoc.org/github.com/go-redis/redis
• redigo
  • 源碼地址：https://github.com/gomodule/redigo
  • 文檔地址：http://godoc.org/github.com/gomodule/redigo/redis

兩個都是非常優秀的redisclient庫，也是redis官網上推薦，筆者選擇是的是go-redis，因為go-redis封裝了redis的大部分命令，不用關心redis的命令的細節，直接調用相應介面就行；redigo是基於命令的，發送一個命令，然後在解析reply；所以相對而言，筆者覺得go-redis介面更友好；

這裡也稍微做個廣告，如果有朋友是用c++的，可以嘗試下筆者開源的一個c++版的redisclient：redis_cpp, 跟go-redis類似，封裝了redis大部分的命令，支援redis standalone, sentinel, cluster mode, 介面友好好用

1. go-redis的安裝

go get https://github.com/go-redis/redis

2. 測試代碼

// redis_test project main.gopackage mainimport (    "fmt"    "time"    "github.com/go-redis/redis")func err_handler(err error) {    fmt.Printf("err_handler, error:%s\n", err.Error())    panic(err.Error())}func standalone_single_client_redis_test() {    fmt.Printf("standalone_single_client_redis_test")    client := redis.NewClient(&redis.Options{        Addr:     "localhost:6379",        Password: "",        DB:       0,    })    defer client.Close()    pong, err := client.Ping().Result()    if err != nil {        fmt.Printf("ping error[%s]\n", err.Error())        err_handler(err)    }    fmt.Printf("ping result: %s\n", pong)    fmt.Printf("----------------------------------------\n")    // set / get test    fmt.Printf("set/get test\n")    err = client.Set("foo", "bar", 0).Err()    if err != nil {        fmt.Printf("try set key[foo] to value[bar] error[%s]\n", err.Error())        err_handler(err)    }    err = client.Set("foo1", "bar1", time.Hour*2).Err()    if err != nil {        fmt.Printf("try set key[foo1] to value[bar1] error[%s]\n", err.Error())        err_handler(err)    }    // get value    value, err := client.Get("foo").Result()    if err != nil {        fmt.Printf("try get key[foo] error[%s]\n", err.Error())        // err_handler(err)    }    fmt.Printf("key[foo]'s value is %s\n", value)    value, err = client.Get("foo1").Result()    if err != nil {        fmt.Printf("try get key[foo1] error[%s]\n", err.Error())        // err_handler(err)    }    fmt.Printf("key[foo1]'s value is %s\n", value)    value, err = client.Get("foo2").Result()    if err != nil {        fmt.Printf("try get key[foo2] error[%s]\n", err.Error())        // err_handler(err)    }    fmt.Printf("key[foo2]'s value is %s\n", value)    // get ttl    duration, err := client.TTL("foo").Result()    if err != nil {        fmt.Printf("try get ttl of key[foo] error[%s]\n", err.Error())        err_handler(err)    }    fmt.Printf("key[foo]' ttl is [%s] %fs\n", duration.String(), duration.Seconds())    duration, err = client.TTL("foo1").Result()    if err != nil {        fmt.Printf("try get ttl of key[foo1] error[%s]\n", err.Error())        err_handler(err)    }    fmt.Printf("key[foo1]' ttl is [%s] %ds\n", duration.String(), int64(duration.Seconds()))    fmt.Printf("----------------------------------------\n")    // list test    fmt.Printf("list test\n")    err = client.RPush("tqueue", "tmsg1").Err()    if err != nil {        fmt.Printf("rpush list[tqueue] error[%s]\n", err.Error())        err_handler(err)    }    list_len, err := client.LLen("tqueue").Result()    if err != nil {        fmt.Printf("try get len of list[tqueue] error[%s]\n", err.Error())        err_handler(err)    }    fmt.Printf("len of list[tqueue] is %d\n", list_len)    result, err := client.BLPop(time.Second*1, "tqueue").Result()    if err != nil {        fmt.Printf("blpop list[tqueue] error[%s]\n", err.Error())        err_handler(err)    }    fmt.Printf("blpop list[tqueue], value[%s]\n", result[1])    fmt.Printf("----------------------------------------\n")    fmt.Printf("hmap test\n")    err = client.HSet("tmap", "1", "f1").Err()    if err != nil {        fmt.Printf("try hset map[tmap] field[1] error[%s]\n", err.Error())        err_handler(err)    }    err = client.HSet("tmap", "2", "f2").Err()    if err != nil {        fmt.Printf("try hset map[tmap] field[2] error[%s]\n", err.Error())        err_handler(err)    }    kv_map := make(map[string]interface{})    kv_map["3"] = "f3"    kv_map["4"] = "f4"    err = client.HMSet("tmap", kv_map).Err()    if err != nil {        fmt.Printf("try mset map[tmap] field[3] field[4] error[%s]\n", err.Error())        err_handler(err)    }    map_len, err := client.HLen("tmap").Result()    if err != nil {        fmt.Printf("try get len of map[tmap] error[%s]\n", err.Error())        err_handler(err)    }    fmt.Printf("len of map[tmap] is %d\n", map_len)    // get map value    value, err = client.HGet("tmap", "1").Result()    if err != nil {        fmt.Printf("try get field[1] value of map[tmap] error[%s]\n", err.Error())        err_handler(err)    }    fmt.Printf("field[1] value of map[tmap] is %s\n", value)    // hgetall    result_kv, err := client.HGetAll("tmap").Result()    if err != nil {        fmt.Printf("try hgetall map[tmap] error[%s]\n", err.Error())        err_handler(err)    }    for k, v := range result_kv {        fmt.Printf("map[tmap] %s = %s\n", k, v)    }    fmt.Printf("----------------------------------------\n")    fmt.Printf("pubsub test\n")    pubsub := client.Subscribe("test_channel")    _, err = pubsub.Receive()    if err != nil {        fmt.Printf("try subscribe channel[test_channel] error[%s]\n", err.Error())        err_handler(err)    }    // go channel to used to receive message    ch := pubsub.Channel()    // publish a message    err = client.Publish("test_channel", "hello").Err()    if err != nil {        fmt.Printf("try publish message to channel[test_channel] error[%s]\n", err.Error())        err_handler(err)    }    time.AfterFunc(time.Second*2, func() {        _ = pubsub.Close()    })    // consume message    for {        msg, ok := <-ch        if !ok {            break        }        fmt.Printf("recv message[%s] from channel[%s]\n", msg.Payload, msg.Channel)    }}func main() {    fmt.Println("redis_test!")    standalone_single_client_redis_test()}