1 files changed, 25 insertions, 1 deletions
diff --git a/vendor/github.com/go-redis/redis/command.go b/vendor/github.com/go-redis/redis/command.go
index 480a5ce19..1588ca251 100644
--- a/vendor/github.com/go-redis/redis/command.go
+++ b/vendor/github.com/go-redis/redis/command.go
@@ -10,6 +10,7 @@ import (
 	"github.com/go-redis/redis/internal"
 	"github.com/go-redis/redis/internal/pool"
 	"github.com/go-redis/redis/internal/proto"
+	"github.com/go-redis/redis/internal/util"
 )
 
 type Cmder interface {
@@ -436,7 +437,7 @@ func NewStringCmd(args ...interface{}) *StringCmd {
 }
 
 func (cmd *StringCmd) Val() string {
-	return internal.BytesToString(cmd.val)
+	return util.BytesToString(cmd.val)
 }
 
 func (cmd *StringCmd) Result() (string, error) {
@@ -1022,3 +1023,26 @@ func (cmd *CommandsInfoCmd) readReply(cn *pool.Conn) error {
 	cmd.val = v.(map[string]*CommandInfo)
 	return nil
 }
+
+//------------------------------------------------------------------------------
+
+type cmdsInfoCache struct {
+	once internal.Once
+	cmds map[string]*CommandInfo
+}
+
+func newCmdsInfoCache() *cmdsInfoCache {
+	return &cmdsInfoCache{}
+}
+
+func (c *cmdsInfoCache) Do(fn func() (map[string]*CommandInfo, error)) (map[string]*CommandInfo, error) {
+	err := c.once.Do(func() error {
+		cmds, err := fn()
+		if err != nil {
+			return err
+		}
+		c.cmds = cmds
+		return nil
+	})
+	return c.cmds, err
+}