Go語言： 谷歌的go-redis模塊按指定pattern獲取 keys

API：

func (c Client) Keys(pattern string) *StringSliceCmd

示例：

package main

import (
	"fmt"
	"github.com/go-redis/redis"
)

func main() {
	client := redis.NewClient(&redis.Options{Addr: "127.0.0.1:6379"})
	defer client.Close()
	keys, err := client.Keys("*").Result()
	if err != nil {
		fmt.Printf("%s\n", err.Error())
		return
	}
	for _, k := range keys {
		fmt.Printf("%s\n", k)
	}
}