I haven't really formulated an opinion on pull vs. push models for metrics. For us, we're aiming to be more than just a DevOps platform. Those kinds of metrics

I haven't really formulated an opinion on pull vs. push models for metrics. For us, we're aiming to be more than just a DevOps platform. Those kinds of metrics are just one of the use cases we're trying to hit, which means that pull won't work for us. In the case of sensor data, which we want to be useful for, they need to be able to push. They also need to be able to push things that are time delayed by potentially many hours due to spotty network connectivity. I think that push also makes it easier if you're sending metrics from an application. That is, push makes more sense if you're talking about event driven metrics, vs. sampling metrics (like from your system). However, overall I think Prometheus is a great project. I'm hoping that as we advance the storage engine in InfluxDB, it'll become a preferred method to store long term metrics from Prometheus. Someone also submitted a PR to Telegraf that would make it respond to metric pull requests from Prometheus, which is something we're totally up for. We just need to figure out the right structure.