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Prometheus

The pingora-prometheus crate provides a Prometheus HTTP metrics server for scraping.

Adding the Dependency

Add pingora-prometheus to your Cargo.toml:

pingora-prometheus = "0.8.0"

Setting up a Prometheus Metrics Endpoint

    ...
    let mut prometheus_service_http = pingora_prometheus::prometheus_http_service();
    prometheus_service_http.add_tcp("0.0.0.0:1234");
    my_server.add_service(prometheus_service_http);
    my_server.run_forever();

The simplest way to use it is to have static metrics.

static MY_COUNTER: Lazy<IntGauge> = Lazy::new(|| {
    register_int_gauge!("my_counter", "my counter").unwrap()
});

This static metric will automatically appear in the Prometheus metric endpoint.