✏ update comments

redis/redis.go

@@ -14,8 +14,8 @@ type Storage struct {
 	db *redis.Client
 }
 
-// Common storage errors
-var ErrNotExist = errors.New("key does not exist")
+// ErrNotFound means that a get call did not find the requested key.
+var ErrNotFound = errors.New("key not found")
 
 // New creates a new redis storage
 func New(config ...Config) *Storage {
@@ -51,11 +51,11 @@ func New(config ...Config) *Storage {
 // Get value by key
 func (s *Storage) Get(key string) ([]byte, error) {
 	if len(key) <= 0 {
-		return nil, ErrNotExist
+		return nil, ErrNotFound
 	}
 	val, err := s.db.Get(context.Background(), key).Bytes()
 	if err == redis.Nil {
-		return nil, ErrNotExist
+		return nil, ErrNotFound
 	}
 	return val, err
 }