Support direct []byte and string responses without dst on memory driver

memory.go

@@ -3,6 +3,7 @@ package cache
 import (
 	"errors"
 	"github.com/patrickmn/go-cache"
+	"github.com/vmihailenco/msgpack/v4"
 	"reflect"
 	"time"
 )
@@ -36,7 +37,14 @@ func (mc *MemoryCache) Get(key string, dst ...interface{}) ([]byte, error) {
 	}
 
 	if len(dst) == 0 {
-		return nil, ErrMemoryCacheNotSupported
+		switch item.(type) {
+		case string:
+			return []byte(item.(string)), nil
+		case []byte:
+			return item.([]byte), nil
+		}
+
+		return msgpack.Marshal(item)
 	}
 
 	v := dst[0]