q792602257/VptPassiveAdapter
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s3 避免缓存击穿

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This commit is contained in:
Jerry Yan 2025-04-21 14:37:51 +08:00
parent 2971c5f52d
commit e6f93a4d37
2 changed files with 23 additions and 0 deletions
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3
fs/local_adapter.go
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@ -26,6 +26,9 @@ func (l *LocalAdapter) GetFileList(ctx context.Context, dirPath string, relDt ti
span.SetStatus(codes.Error, "未配置存储路径")
return nil, fmt.Errorf("未配置存储路径")
}
span.SetAttributes(attribute.String("path", dirPath))
span.SetAttributes(attribute.String("relativeDate", relDt.Format("2006-01-02")))
// 读取文件夹下目录
files, err := os.ReadDir(path.Join(l.StorageConfig.Path, dirPath))
if err != nil {

20
fs/s3_adapter.go
View File

@ -51,6 +51,8 @@ func (s *S3Adapter) GetFileList(ctx context.Context, dirPath string, relDt time.
_, span := tracer.Start(ctx, "GetFileList_s3")
defer span.End()
span.SetAttributes(attribute.String("path", dirPath))
span.SetAttributes(attribute.String("relativeDate", relDt.Format("2006-01-02")))
key := fmt.Sprintf("%s_%s", dirPath, relDt.Format("2006-01-02"))
if cachedInterface, ok := s.cache.Load(key); ok {
cachedItem := cachedInterface.(cacheItem)
@ -60,6 +62,24 @@ func (s *S3Adapter) GetFileList(ctx context.Context, dirPath string, relDt time.
}
}
mutexKey := fmt.Sprintf("lock_%s", key)
mutex, _ := s.cache.LoadOrStore(mutexKey, &sync.Mutex{})
lock := mutex.(*sync.Mutex)
defer func() {
// 解锁后删除锁（避免内存泄漏）
s.cache.Delete(mutexKey)
lock.Unlock()
}()
lock.Lock()
if cachedInterface, ok := s.cache.Load(key); ok {
cachedItem := cachedInterface.(cacheItem)
if time.Now().Before(cachedItem.expires) {
span.SetAttributes(attribute.Bool("cache.hit", true))
return cachedItem.data, nil
}
}
if s.StorageConfig.S3.Bucket == "" {
span.SetAttributes(attribute.String("error", "未配置S3存储桶"))
span.SetStatus(codes.Error, "未配置S3存储桶")