代码规范过滤，移除冗余代码，替换掉不推荐的包

server/internal/library/cache/cache.go

@@ -66,5 +66,4 @@ func SetAdapter(ctx context.Context) {
 	// 通用缓存
 	cache = gcache.New()
 	cache.SetAdapter(adapter)
-	return
 }

server/internal/library/cache/file/file.go

@@ -120,7 +120,6 @@ func (c *AdapterFile) UpdateExpire(ctx context.Context, key interface{}, duratio
 	oldTTL = int64(expire)
 	if oldTTL == -2 {
 		// It does not exist.
-		oldTTL = -1
 		return
 	}
 	oldDuration = time.Duration(oldTTL) * time.Second