This is the current pre-release for the upcoming 1.0.0 version.
It adds two major new modules:
prometheus-metrics-exporter-httpserver
is a built-in HTTP server for exposing Promtheus metrics (this is a port of simpleclient_httpserver).prometheus-metrics-exporter-opentelemetry
is an exporter for pushing metrics to an OpenTelemetry endpoint in OTLP format.
In addition to these new features, there was a lot of internal refactoring.
There isn't much documentation yet, but for each new module there's an end-to-end example and a README in the examples/ directory (on the 1.0.x branch).
The next features on the roadmap towards 1.0.0 are a port of the built-in JVM metrics, and a backwards-compatibility module for existing simpleclient.