Is Prometheus Push or Pull

Prometheus by design implements a pull-based approach for collecting metrics. For most of us, this is a departure from the push-based monitoring systems we’ve been using for the past decade.

Is Prometheus a pull model?

Prometheus is not an event-based system In such a system, pulling would be problematic indeed: the instrumented service would have to buffer events between pulls, and the pulls would have to happen incredibly frequently in order to simulate the same “liveness” of the push-based approach and not overwhelm event buffers.

Is Datadog push or pull?

Pull, on the other hand, is when the agents themselves contain the monitoring configuration, such as in Datadog, collectd, and Prometheus. The agents somehow know what they need to collect and push the metrics (and often any metadata like units, plus tags) to the central system.