return
			}
		case "gtf":
			z.GetTagFailedTotal, err = dc.ReadUint64()
			if err != nil {
				err = msgp.WrapError(err, "GetTagFailedTotal")
				return
			}
		case "rtf":
			z.RmvTagFailedTotal, err = dc.ReadUint64()
			if err != nil {
				err = msgp.WrapError(err, "RmvTagFailedTotal")
				return
			}
		case "gf":
			z.GetFailedTotal, err = dc.ReadUint64()

	PutTagFailedTotal uint64 `json:"putTaggingProxyFailed" msg:"ptf"`
	GetTagFailedTotal uint64 `json:"getTaggingProxyFailed" msg:"gtf"`
	RmvTagFailedTotal uint64 `json:"removeTaggingProxyFailed" msg:"rtf"`
	GetFailedTotal    uint64 `json:"getProxyFailed" msg:"gf"`
	HeadFailedTotal   uint64 `json:"headProxyFailed" msg:"hf"`
}

func (p *ProxyMetric) add(p2 ProxyMetric) {
	atomic.AddUint64(&p.GetTotal, p2.GetTotal)