func WriteFile(path string, obj interface{}) (err error) {
mh := codec.MsgpackHandle{}
mh.AsSymbols = codec.AsSymbolNone
mh.RawToString = true
buf := &bytes.Buffer{}
encoder := codec.NewEncoder(buf, &mh)
err = encoder.Encode(obj)
if err != nil {
return
}
err = ioutil.WriteFile(path, buf.Bytes(), os.FileMode(0777))
return
}