}

var configLock sync.RWMutex

// Enabled - indicates if cache is enabled or not
func (c *Config) Enabled() bool {
	return c.Enable && c.Endpoint != ""
}

// MatchesSize verifies if input 'size' falls under cacheable threshold
func (c Config) MatchesSize(size int64) bool {
	configLock.RLock()
	defer configLock.RUnlock()

	return c.Enable && c.BlockSize > 0 && size <= c.BlockSize
}

// Update updates new cache frequency

		// AWS S3 silently drops checksums on range requests.
		hash.AddChecksumHeader(w, objInfo.decryptChecksums(opts.PartNumber))
	}

	var buf *bytebufferpool.ByteBuffer
	if update {
		if globalCacheConfig.MatchesSize(objInfo.Size) {
			buf = bytebufferpool.Get()
			defer bytebufferpool.Put(buf)
		}
		defer func() {
			var data []byte
			if buf != nil {
				data = buf.Bytes()
			}