Observability

Metrics

Kameo supports a metrics feature flag, which keeps track of the number of messages and signals sent and received across actors.

kameo = { version = "*", features = ["metrics"] }

With the feature flag enabled, you can install any supported global recorder compatible with the metrics crate.

Some common exporters include:

• metrics-exporter-tcp - outputs metrics to clients over TCP
• metrics-exporter-prometheus - serves a Prometheus scrape endpoint

Hotpath

For observability in your terminal, a TUI called hotpath is available and supported by kameo.

This can be enabled with the hotpath feature flag in kameo:

kameo = { version = "*", features = ["hotpath"] }

You'll also need to install the hotpath TUI:

cargo install hotpath --features tui

Once installed, you can run your kameo app, and in another terminal run hotpath to immediately get live usage metrics.