[feat] add pkgs, dockerfile, makefile

pkg/redis/redis.go

@@ -0,0 +1,39 @@
+package redis
+
+import (
+	"fmt"
+
+	"github.com/go-redis/redis"
+)
+
+const (
+	KeyToken = "91-token:%s"
+)
+
+type Redis struct {
+	*redis.Client
+	prefix string
+}
+
+var r *Redis
+
+// Init redis client
+func Init(port int, host, prefix string) error {
+	r = &Redis{prefix: prefix}
+	r.Client = redis.NewClient(&redis.Options{
+		Addr: fmt.Sprintf("%s:%d", host, port),
+	})
+
+	if _, err := r.Ping().Result(); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Key combine prefix to key
+func (x *Redis) Key(key string) string {
+	if len(x.prefix) > 0 {
+		return fmt.Sprintf("%s:%s", x.prefix, key)
+	}
+	return key
+}