Use ConstMetrics

[brian-brazil]

This exporter is currently using direct instrumentation, which is strong discouraged for custom collectors. It should be switched to use ConstMetrics, and all the mutexes can then be removed.

[oliver006]

Not sure what you mean by this, do you have any relevant links to code or docs?

[brian-brazil]

https://github.com/prometheus/memcached_exporter/blob/master/main.go has some examples.

[oliver006]

Cool, thanks!