[FR] Back-off strategy for (re-)connects

[Jarthianur]

Is your feature request related to a problem? Please describe.
When connecting a feed, or reconnecting after lost connection, a fixed delay (eg 2 min) is actually not desirable.

Describe the solution you'd like
A back-off strategy would allow (re-)connects with an increasing but limited delay.
For example, the first attempt fails, so a second one is done after 2 sec. If that also fails, the next attempt follows after another 15 sec, and so on. It would then saturate at 2 min or whatever.

Describe alternatives you've considered

Additional notes