use listCache

Author: hshpy

internal/op/fs.go

@@ -177,14 +177,6 @@ func Get(ctx context.Context, storage driver.Driver, path string) (model.Obj, er
 	path = utils.FixAndCleanPath(path)
 	log.Debugf("op.Get %s", path)
 
-	// get the obj directly without list so that we can reduce the io
-	if g, ok := storage.(driver.Getter); ok {
-		obj, err := g.Get(ctx, path)
-		if err == nil {
-			return model.WrapObjName(obj), nil
-		}
-	}
-
 	// is root folder
 	if utils.PathEqual(path, "/") {
 		var rootObj model.Obj
@@ -227,7 +219,24 @@ func Get(ctx context.Context, storage driver.Driver, path string) (model.Obj, er
 
 	// not root folder
 	dir, name := stdpath.Split(path)
-	files, err := List(ctx, storage, dir, model.ListArgs{})
+	key := Key(storage, dir)
+	if files, ok := listCache.Get(key); ok {
+		log.Debugf("use cache when list %s", path)
+		for _, f := range files {
+			if f.GetName() == name {
+				return f, nil
+			}
+		}
+	}
+	// get the obj directly without list so that we can reduce the io
+	if g, ok := storage.(driver.Getter); ok {
+		obj, err := g.Get(ctx, path)
+		if err == nil {
+			return model.WrapObjName(obj), nil
+		}
+	}
+
+	files, err := List(ctx, storage, dir, model.ListArgs{Refresh: true})
 	if err != nil {
 		return nil, errors.WithMessage(err, "failed get parent list")
 	}