I Think Prometheus Is Impossible for FAAS Applications
I recently had the experience of trying to orchestrate Prometheus metrics in a Function-As-A-Service (FAAS) application, which turned out to be a bit of a harrowing experience. Here’s what I learned. Prometheus in a FAAS World In a “standard” architecture, you have a long running service running on some machine somewhere. That service exposes an HTTP(S) endpoint that Prometheus discovers (through some service discovery mechanism), and periodically sends GET requests to, parsing the metrics that your application generates. This “pull based” model relies on several properties of this architecture - applications live long enough to coincide with when Prometheus decides to scrape them, and to be able to count things on their own. ...