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Reduce worker idle queries #177

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Reduce worker idle queries #177

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thomasst
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@thomasst thomasst commented Feb 16, 2021

This reduces Redis ops with N idle workers from from 6 + 4 * (N-1) to 7 + 1 * (N-1) per second.

For example, if 100 workers are idle, Redis queries would be reduced from 402 down to 106 per second.

@thomasst thomasst self-assigned this Feb 16, 2021
@thomasst thomasst requested a review from jkemp101 February 16, 2021 20:33
@thomasst thomasst force-pushed the reduce-idle-activity branch from 5d9afc3 to 1e376f4 Compare February 16, 2021 21:55
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Code looks fine. Would probably want to do a test with a bunch of scheduled queues to see what performance improvement it makes to make sure we understand how this helps.

# one Redis query to enter this block since every single worker calls
# this every second.
# XXX: Ideally, we should keep track of workers and take turns.
key = self._key("lock", "secondary_tasks")
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2 participants