Method increaseHit

internal/caches/storage_file.go:1442–1476

增加某个Key的点击量

(key string, hash string, reader Reader)

// 增加某个Key的点击量
func (this *FileStorage) increaseHit(key string, hash string, reader Reader) {
	var rate = this.policy.PersistenceHitSampleRate
	if rate <= 0 {
		rate = 1000
	}
	if rands.Int(0, rate) == 0 {
		var memoryStorage = this.memoryStorage

		// 增加到热点
		// 这里不收录缓存尺寸过大的文件
		if memoryStorage != nil && reader.BodySize() > 0 && reader.BodySize() < (128<<20) {
			this.hotMapLocker.Lock()
			hotItem, ok := this.hotMap[key]

			if ok {
				hotItem.Hits++
			} else if len(this.hotMap) < HotItemSize { // 控制数量
				this.hotMap[key] = &HotItem{
					Key:  key,
					Hits: 1,
				}
			}
			this.hotMapLocker.Unlock()

			// 只有重复点击的才增加点击量
			if ok {
				var hitErr = this.list.IncreaseHit(hash)
				if hitErr != nil {
					// 此错误可以忽略
					remotelogs.Error("CACHE", "increase hit failed: "+hitErr.Error())
				}
			}
		}
	}
}

// 删除缓存文件
func (this *FileStorage) removeCacheFile(path string) error {