Add a total cache request counter to follow Prometheus conventions[0].
Mark the existing cache miss metric as deprecated.
> Similarly, with hit or miss for caches, it’s better to have one
> metric for total and another for hits.
[0]: https://prometheus.io/docs/instrumenting/writing_exporters/#naming
Signed-off-by: SuperQ <superq@gmail.com>
* tweak language
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* tweak language
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* typo
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
