Golang Redis Cache

1.Redis性能极高 – Redis能读的速度是110000次/s,写的速度是81000次/s 。丰富的数据类型 – Redis支持二进制案例的 Strings, Lists, Hashes, Sets 及 Ordered Sets 数据类型操作。原子 – Redis的所有操作都是原子性的，同时Redis还支持对几个操作全并后的原子性执行。丰富的特性 – Redis还支持 publish/subscribe, 通知, key 过期等等特性。2.Golang Redis Pool关于golang redis的开源框架有 Codis: https://github.com/CodisLabs 点击打开链接Codis 是一个分布式 Redis 解决方案, 对于上层的应用来说, 连接到 Codis Proxy 和连接原生的 Redis Server 没有显著区别 (不支持的命令列表),上层应用可以像使用单机的 Redis 一样使用, Codis 底层会处理请求的转发, 不停机的数据迁移等工作, 所有后边的一切事情, 对于前面的客户端来说是透明的,可以简单的认为后边连接的是一个内存无限大的 Redis 服务。

go-redis:  https://github.com/go-redis  点击打开链接 

const (
	redis_host   string = "127.0.0.1:6379"
	database     string = "redisServer"
	password     string = "123456"
	maxOpenConns int    = 10
	maxIdleConns int    = 10
)

var Cache *RedisConnPool

type RedisConnPool struct {
	redisPool *redis.Pool
}

func init() {
	Cache = &RedisConnPool{}
	Cache.redisPool = myNewPool()
	if Cache.redisPool == nil {
		panic("init redis failed！")
	}
}
func myNewPool() *redis.Pool {
	return &redis.Pool{
		MaxActive:   maxOpenConns, // max number of connections
		MaxIdle:     maxIdleConns,
		IdleTimeout: 10 * time.Second,
		Dial: func() (redis.Conn, error) {
			c, err := redis.Dial("tcp", redis_host)
			if err != nil {
				return nil, err
			}
			if _, err := c.Do("AUTH", password); err != nil {
				c.Close()
				return nil, err
			}
			if _, err := c.Do("select", database); err != nil {
				c.Close()
				return nil, err
			}
			return c, err
		},
		TestOnBorrow: func(c redis.Conn, t time.Time) error {
			_, err := c.Do("PING")
			return err
		},
	}
}

func (p *RedisConnPool) Close() error {
	err := p.redisPool.Close()
	return err
}

// 当前某一个数据库，执行命令
func (p *RedisConnPool) Do(command string, args ...interface{}) (interface{}, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return conn.Do(command, args...)
}

 String（字符串）
func (p *RedisConnPool) SetString(key string, value interface{}) (interface{}, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return conn.Do("SET", key, value)
}

func (p *RedisConnPool) GetBytes(key string) ([]byte, error) {
	conn := p.redisPool.Get()
	defer conn.Close()

	return redis.Bytes(conn.Do("GET", key))
}

func (p *RedisConnPool) GetInt(key string) (int, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return redis.Int(conn.Do("GET", key))
}
func (p *RedisConnPool) GetInt64(key string) (int64, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return redis.Int64(conn.Do("GET", key), )
}
func (p *RedisConnPool) DelKey(key string) (interface{}, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return conn.Do("DEL", key)
}
func (p *RedisConnPool) ExpireKey(key string, seconds int64) (interface{}, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return conn.Do("EXPIRE", key, seconds)
}
func (p *RedisConnPool) Keys(pattern string) ([]string, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return redis.Strings(conn.Do("KEYS", pattern))
}
func (p *RedisConnPool) KeysByteSlices(pattern string) ([][]byte, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return redis.ByteSlices(conn.Do("KEYS", pattern))
}
func (p *RedisConnPool) SetHashMap(key string, fieldValue map[string]interface{}) (interface{}, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return conn.Do("HMSET", redis.Args{}.Add(key).AddFlat(fieldValue)...)
}
func (p *RedisConnPool) GetHashMapString(key string) (map[string]string, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return redis.StringMap(conn.Do("HGETALL", key))
}
func (p *RedisConnPool) GetHashMapInt(key string) (map[string]int, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return redis.IntMap(conn.Do("HGETALL", key))
}

func (p *RedisConnPool) GetHashMapInt64(key string) (map[string]int64, error) {
	conn := p.redisPool.Get()
	defer conn.Close()
	return redis.Int64Map(conn.Do("HGETALL", key))
}