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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2022/04/13 06:10:21 UTC
[GitHub] [pulsar] john1337 opened a new issue, #15146: does pulsar have plan to improve delay message deliver
john1337 opened a new issue, #15146:
URL: https://github.com/apache/pulsar/issues/15146
i am considering using delay message deliver using mq, found some solutions: rabbitmq,rocketmq and pulsar, when i dig deep into pulsar i found pulsar is using memory to realize delay deliver feature so it can't handle heavy load,so i was wondering does pulsar have any plan to improve it and when?
thanks
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[GitHub] [pulsar] github-actions[bot] commented on issue #15146: does pulsar have plan to improve delay message deliver
Posted by GitBox <gi...@apache.org>.
github-actions[bot] commented on issue #15146:
URL: https://github.com/apache/pulsar/issues/15146#issuecomment-1126843681
The issue had no activity for 30 days, mark with Stale label.
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[GitHub] [pulsar] john1337 closed issue #15146: does pulsar have plan to improve delay message deliver
Posted by GitBox <gi...@apache.org>.
john1337 closed issue #15146: does pulsar have plan to improve delay message deliver
URL: https://github.com/apache/pulsar/issues/15146
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[GitHub] [pulsar] tjiuming commented on issue #15146: does pulsar have plan to improve delay message deliver
Posted by GitBox <gi...@apache.org>.
tjiuming commented on issue #15146:
URL: https://github.com/apache/pulsar/issues/15146#issuecomment-1097704568
Pulsar use `InMemoryDelayedDeliveryTracker` to schedule delay messages, and each message costs 24bytes(deliverAt,ledgerId,entryId), which means 1G direct memory could schedule more than 4200000 backlog messages, isn't enough?
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[GitHub] [pulsar] gaozhangmin commented on issue #15146: does pulsar have plan to improve delay message deliver
Posted by GitBox <gi...@apache.org>.
gaozhangmin commented on issue #15146:
URL: https://github.com/apache/pulsar/issues/15146#issuecomment-1098878231
@john1337 You may have misunderstand the implements of pulsar delay message deliver, pulsar doesn't store the data in memory. Only message Position is keep in memory. It won't cost much memory as @tjiuming said above.
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