Hi, thank you for the project. We can see that in #8, we started using pid_hash derived from PID and start time of the process. This will lead to a prometheus metric explosion (as per the caution in https://prometheus.io/docs/practices/naming/#labels). Could we instead use something like a "worker id" as a label instead? That way, we only have a finite number of label values. Happy to contribute a PR as well.

Additional labels can be used to distinguish between multiple different instances of an application or across applications.