A naming strategy that just passes through the metric name, together with tags from a
set of static values. Open TSDB requires at least one tag, so tags are always added for
you: the
"domain" key is added with a value "spring", and the
"process" key is added with a value equal to the object hash of "this" (the
naming strategy). The "domain" value is a system identifier - it would be common to all
processes in the same distributed system. In most cases this will be unique enough to
allow aggregation of the underlying metrics in Open TSDB, but normally it is best to
provide your own tags, including a prefix and process identifier if you know one
(overwriting the default).