func (self *MemStore) getKey(sc *net.SeriesCommand) string {
key := sc.Entity()
metrics := []string{}
for metricName := range sc.Metrics() {
metrics = append(metrics, metricName)
}
sort.Strings(metrics)
for i := range metrics {
key += metrics[i]
}
tags := []string{}
for tagName, tagValue := range sc.Tags() {
tags = append(tags, tagName+"="+tagValue)
}
sort.Strings(tags)
for i := range tags {
key += tags[i]
}
return key
}
