golangのredis入門:hash表

import (
    "fmt"
    "github.com/garyburd/redigo/redis"
)

/*  
    hash       ： 
    hset hash field value     hash   field       value
            ，         ，        hash     
    eg:
        127.0.0.1:6379> hset website google www.g.cn
        (integer) 1
        127.0.0.1:6379> hget website google
        "www.g.cn"

    hsetnx hash field value       field           ，     value
                   field value
    eg:
        127.0.0.1:6379> hsetnx database nosql redis
        (integer) 1
        127.0.0.1:6379> hsetnx database nosql mongo
        (integer) 0
        127.0.0.1:6379> hget database nosql
        "redis"
    hget hash field             
    eg:
        127.0.0.1:6379> hget database nosql
        "redis"
        127.0.0.1:6379> hget data redis
        (nil)

    hexists hash field   field   hash  
    eg:
        127.0.0.1:6379> hexists database nosql
        (integer) 1
        127.0.0.1:6379> hexists database redis
        (integer) 0

    hdel hash field ...      hash           ，         。
    eg:
        127.0.0.1:6379> hset database sql  mysql
        (integer) 1
        127.0.0.1:6379> hdel database sql
        (integer) 1
        127.0.0.1:6379> hdel database sql nosql
        (integer) 1
    hlen key      key     
    eg:
        127.0.0.1:6379> hlen database
        (integer) 0

    hstrlen key field       key   field      
    eg:
        127.0.0.1:6379> hset database sql mysql
        (integer) 1
        127.0.0.1:6379> hstrlen database sql
        (integer) 5

    hincrby key field increment       key     field        increment
           field  hincrby  
    eg:
        127.0.0.1:6379> hset add one 1
        (integer) 1
        127.0.0.1:6379> hincrby add one 1000
        (integer) 1001

    hincrbyfloat key field increment     key   field       increment
    eg:
        127.0.0.1:6379> hincrby add one 1000
        (integer) 1001
        127.0.0.1:6379> hincrbyfloat add one 99.555555
        "1100.55555500000000002"

    hmset  key field value [field value …]      field-value( - )        key  。
    eg:
        127.0.0.1:6379> hmset fruit key1 apple  key2 banana key3 orange
        OK

    hmget key field [field …]       key  ，          。
    eg:
        127.0.0.1:6379> hmget fruit key1 key2 key3
        1) "apple"
        2) "banana"
        3) "orange"
    hkeys key         key      。
    eg:
        127.0.0.1:6379> hkeys fruit
        1) "key1"
        2) "key2"
        3) "key3"

    hvals key       key      
    eg:
        127.0.0.1:6379> hvals fruit
        1) "apple"
        2) "banana"
        3) "orange"
    hgetall key       key  ，      。
    eg:
        127.0.0.1:6379> hgetall fruit
        1) "key1"
        2) "apple"
        3) "key2"
        4) "banana"
        5) "key3"
        6) "orange"
*/

func main() {
    conn, err := redis.Dial("tcp", "127.0.0.1:6379")
    if err != nil {
        fmt.Println("conn error: ", err)
    }

    defer conn.Close()

    // hset
    _, err = conn.Do("hset", "website", "google", "www.google.com")
    if err != nil {
        fmt.Println("hset error : ", err)
    }
    // hmset
    _, err = conn.Do("hmset", "website", "baidu", "www.baidu.com", "qq", "www.qq.com")
    if err != nil {
        fmt.Println("hmset error:", err)
    }

    // hgetall
    res, err := redis.StringMap(conn.Do("hgetall", "website"))
    if err == nil {
        fmt.Println(res)
    }else {
        fmt.Println("hgetall error: ", err)
    }

    // hvals
    rs, err := redis.Strings(conn.Do("hvals", "website"))
    if err == nil {
        fmt.Println(rs)
    }else {
        fmt.Println(err)
    }

    // hkeys
    rk, err := redis.Strings(conn.Do("hkeys", "website"))
    if err == nil {
        fmt.Println(rk)
    }else {
        fmt.Println(err)
    }

    // hstrlen
    l, err := redis.Int(conn.Do("hstrlen", "website", "google"))
    if err == nil {
        fmt.Println(l)
    }else {
        fmt.Println(err)
    }
    // hlen
    l, err = redis.Int(conn.Do("hlen", "website"))
    if err == nil {
        fmt.Println(l)
    }else {
        fmt.Println(err)
    }
}