From 91d67ad384375173d1d383c7f191a94d96e383cc Mon Sep 17 00:00:00 2001
From: xfy <i@rua.plus>
Date: Wed, 22 Apr 2026 13:34:51 +0800
Subject: [PATCH] =?UTF-8?q?refactor(cache,config):=20=E4=BB=A3=E7=A0=81?=
 =?UTF-8?q?=E6=B8=85=E7=90=86=E5=92=8C=E4=BC=98=E5=8C=96?=
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- disk_cache: 忽略 filepath.Walk 和 Delete 返回值
- tiered_cache: 忽略 l1.Delete 返回值，删除未使用的 revalidate 函数
- config: 简化 multiplier 变量声明

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
---
 internal/cache/disk_cache.go   |  4 ++--
 internal/cache/tiered_cache.go | 14 +-------------
 internal/config/config.go      |  2 +-
 3 files changed, 4 insertions(+), 16 deletions(-)

diff --git a/internal/cache/disk_cache.go b/internal/cache/disk_cache.go
index 380b6b4..0f6c2ab 100644
--- a/internal/cache/disk_cache.go
+++ b/internal/cache/disk_cache.go
@@ -134,7 +134,7 @@ func (dc *DiskCache) lazyLoad() {
 	defer close(dc.loadCh)
 
 	// 扫描目录加载元数据（不加载实际数据）
-	filepath.Walk(dc.basePath, func(path string, info os.FileInfo, err error) error {
+	_ = filepath.Walk(dc.basePath, func(path string, info os.FileInfo, err error) error {
 		if err != nil || info.IsDir() {
 			return nil
 		}
@@ -214,7 +214,7 @@ func (dc *DiskCache) Get(hashKey uint64, origKey string) (*ProxyCacheEntry, bool
 	if meta.CRC32 != 0 {
 		if crc32.ChecksumIEEE(data) != meta.CRC32 {
 			// 数据损坏，删除条目
-			dc.Delete(hashKey)
+			_ = dc.Delete(hashKey)
 			dc.missCount.Add(1)
 			return nil, false, false
 		}
diff --git a/internal/cache/tiered_cache.go b/internal/cache/tiered_cache.go
index cdb6d99..ee2cfa2 100644
--- a/internal/cache/tiered_cache.go
+++ b/internal/cache/tiered_cache.go
@@ -134,7 +134,7 @@ func (tc *TieredCache) Set(hashKey uint64, origKey string, data []byte, headers
 
 // Delete 删除缓存条目（实现 CacheBackend 接口）。
 func (tc *TieredCache) Delete(hashKey uint64) error {
-	tc.l1.Delete(hashKey)
+	_ = tc.l1.Delete(hashKey)
 	return tc.l2.Delete(hashKey)
 }
 
@@ -238,15 +238,3 @@ func (tc *TieredCache) checkAndPromote() {
 		}
 	}
 }
-
-// revalidate 重新验证过期缓存。
-func (tc *TieredCache) revalidate(hashKey uint64, origKey string, entry *ProxyCacheEntry) {
-	// 标记为正在更新
-	entry.Updating.Store(true)
-
-	// 删除 L1 中的过期条目（如果存在）
-	tc.l1.Delete(hashKey)
-
-	// 注意：实际的重新验证逻辑需要在 proxy 层实现
-	// 这里只是标记和清理，真正的重新获取由 proxy 层触发
-}
diff --git a/internal/config/config.go b/internal/config/config.go
index f56ed75..10977ff 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -455,7 +455,7 @@ func parseSize(s string) (int, error) {
 
 	// 提取单位
 	unit := strings.ToLower(s[len(s)-1:])
-	var multiplier int = 1
+	multiplier := 1
 	numStr := s
 
 	if unit == "k" {