Prometheus Metrics

Enable internal metrics; export them from your app.

export FAPILOG_CORE__ENABLE_METRICS=true

from fapilog import Settings, get_logger

settings = Settings(core__enable_metrics=True)
logger = get_logger(settings=settings)
logger.info("metrics on")

What’s recorded:

• Events submitted/dropped

• Queue high-watermark

• Backpressure waits

• Flush latency

• Sink errors

Expose metrics via your own HTTP endpoint/registry; fapilog does not start a Prometheus server by itself.