From 4b9e1ba582b72b1ab6e01ae4a4e02c6b46337893 Mon Sep 17 00:00:00 2001
From: tongjicoder <tongjicoder@icloud.com>
Date: Wed, 28 May 2025 01:02:54 +0800
Subject: [PATCH] refactor: use maps.copy for cleaner map handling

Signed-off-by: tongjicoder <tongjicoder@icloud.com>
---
 db/batch/kv_cache.go | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/db/batch/kv_cache.go b/db/batch/kv_cache.go
index f35fdfa502..474fb915ae 100644
--- a/db/batch/kv_cache.go
+++ b/db/batch/kv_cache.go
@@ -5,6 +5,8 @@
 
 package batch
 
+import "maps"
+
 type (
 	// KVStoreCache is a local cache of batched <k, v> for fast query
 	KVStoreCache interface {
@@ -145,9 +147,7 @@ func (c *kvCache) Append(caches ...KVStoreCache) error {
 			if _, ok := c.cache[key1]; !ok {
 				c.cache[key1] = make(map[string]*node)
 			}
-			for key2, node := range ns {
-				c.cache[key1][key2] = node
-			}
+			maps.Copy(c.cache[key1], ns)
 		}
 	}
 	return nil