[question] Why default collectors implementations create metric object every time when #collect methos is called

[sleshJdev]

https://github.com/prometheus/client_python/blob/master/prometheus_client/gc_collector.py

Should default collectors re-use already created instance of metric? Why it creates it again and again?

[csmarchbanks]

It's not much work to create new instances of the metric and allows the collector itself not to keep any state or locking logic. Not applicable to the gc collector specifically, but the pattern of recreating all metrics also makes sure that old values are not kept forever when an underlying resource is deleted.