'Prometheus::Tiny' is a minimal metrics client for the at http://prometheus.io/ time-series database.

It does the following things differently to Net::Prometheus:
* No setup. You don't need to pre-declare metrics to get something useful.
* Labels are passed in a hash. Positional parameters get awkward.
* No inbuilt collectors, PSGI apps, etc. Just the metrics.
* Doesn't know anything about different metric types. You get what you ask for.

These could all be pros or cons, depending on what you need. For me, I needed a compact base that I could back on a shared memory region. See Prometheus::Tiny::Shared for that!