Increase poll interval for the merged/closed merge requests
Problem to solve
widget.json
is not the cheapest request and it has a high request rate: #209268 (closed)
In order to reduce the request rate, we can consider increasing poll interval for merged/closed merge requests because they aren't intended to be changed very often.
Currently, we polling the info for a merged MR as frequently as for the open ones:
- the first interval is 10s
- next intervals are: the previous interval multiplied by 2
- max interval is 4 minutes
We can reconsider it and poll info for a merged/closed MR every 5 minutes starting from the beginning