Remove unused error, add return for string and []byte types with dst set

memory.go

@@ -9,8 +9,7 @@ import (
 )
 
 var (
-	ErrMemoryCacheNotExists    = errors.New("item does not exist")
-	ErrMemoryCacheNotSupported = errors.New("memory cache does not support retrieving items without a destination pointer")
+	ErrMemoryCacheNotExists = errors.New("item does not exist")
 )
 
 type MemoryCache struct {
@@ -53,12 +52,12 @@ func (mc *MemoryCache) Get(key string, dst ...interface{}) ([]byte, error) {
 	case *string:
 		if v != nil {
 			*v = item.(string)
-			return nil, nil
+			return []byte(item.(string)), nil
 		}
 	case *[]byte:
 		if v != nil {
 			*v = item.([]byte)
-			return nil, nil
+			return item.([]byte), nil
 		}
 	case *int:
 		if v != nil {