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downsample logging

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This commit is contained in:
Brian Gough 2019-04-11 16:25:42 +01:00
parent 9eee098af4
commit e72acacf17
1 changed files with 3 additions and 2 deletions
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5
services/real-time/app/coffee/EventLogger.coffee
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@ -35,11 +35,12 @@ module.exports = EventLogger =
return # order is ok
if (count == previous)
metrics.inc "event.#{channel}.duplicate"
logger.warn {channel:channel, message_id:message_id}, "duplicate event"
if Math.random() < 0.01
logger.warn {channel:channel, message_id:message_id}, "duplicate event (sampled at 1%)"
return "duplicate"
else
metrics.inc "event.#{channel}.out-of-order"
logger.warn {channel:channel, message_id:message_id, key:key, previous: previous, count:count}, "out of order event"
# logger.warn {channel:channel, message_id:message_id, key:key, previous: previous, count:count}, "out of order event"
return "out-of-order"
_storeEventCount: (key, count) ->