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Make starting pushers faster during start up

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We start all pushers on start up and immediately start a background
process to fetch push to send. This makes start up incredibly painful
when dealing with many pushers.

Instead, let's do a quick fast DB check to see if there *may* be push to
send and only start the background processes for those pushers. We also
stagger starting up and doing those checks so that we don't try and
handle all pushers at once.
This commit is contained in:
Erik Johnston 2019-04-02 16:45:33 +01:00
parent 297bf2547e
commit 5bec8d660d
4 changed files with 73 additions and 8 deletions
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11
synapse/push/emailpusher.py
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@ -72,8 +72,15 @@ class EmailPusher(object):
self._is_processing = False
def on_started(self):
if self.mailer is not None:
def on_started(self, should_check_for_notifs):
"""Called when this pusher has been started.
Args:
should_check_for_notifs (bool): Whether we should immediately
check for push to send. Set to False only if it's known there
is nothing to send
"""
if should_check_for_notifs and self.mailer is not None:
self._start_processing()
def on_stop(self):