if opts.PartNumber > 0 && len(objInfo.Parts) > 0 {
		setPartsCountHeaders(w, objInfo)
	}

	setHeadGetRespHeaders(w, r.Form)

	var buf *bytebufferpool.ByteBuffer
	if update && globalCacheConfig.MatchesSize(objInfo.Size) {
		buf = bytebufferpool.Get()
		defer bytebufferpool.Put(buf)
	}

	var iw io.Writer
	iw = w
	if buf != nil {
		iw = io.MultiWriter(w, buf)
	}

	statusCodeWritten := false