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Cap the time to retry txns to appservices to 8.5 minutes

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There's been numerous issues with people playing around with their
application service and then not receiving events from their HS for
ages due to backoff timers reaching crazy heights (albeit capped at
< 1 day).

Reduce the max time between pokes to be 8.5 minutes (2^9 secs) which
is quick enough for people to wait it out (avg wait time being 4.25 min)
but long enough to actually give the AS breathing room if it needs it.
This commit is contained in:
Kegan Dougal 2015-10-21 10:10:55 +01:00
parent 3c7d6202ea
commit 4dec901c76
1 changed files with 2 additions and 2 deletions
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synapse/appservice/scheduler.py
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@ -224,8 +224,8 @@ class _Recoverer(object):
self.clock.call_later((2 ** self.backoff_counter), self.retry)
def _backoff(self):
# cap the backoff to be around 18h => (2^16) = 65536 secs
if self.backoff_counter < 16:
# cap the backoff to be around 8.5min => (2^9) = 512 secs
if self.backoff_counter < 9:
self.backoff_counter += 1
self.recover()