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async subscription Thread creation

See original GitHub issue

currently async subscriptions create a Thread per active subscription - this is problematic for even moderately large numbers of active subscriptions - with a 64-bit vm default Thread stack size of 1MB then 10k connections leads to a minimum 10GB memory requirement before doing any actual processing

Issue Analytics

State:
Created 6 years ago
Comments:9 (6 by maintainers)

Top GitHub Comments

1reaction

ColinSullivan1commented, May 11, 2017

@mccraigmccraig , @jtdudley2 , Thank you for raising and evaluating this issue. This is an issue that spans a few of our clients. While it’s been addressed elsewhere, unfortunately it has not been addressed here in the java client yet. I’ve opened #114 to add this feature by the next release.

1reaction

jtdudley2commented, May 11, 2017

I was evaluating nats-io and ran across the same thing.

I did a quick proof of concept to change this behavior to use a single dispatch thread for async subscriptions.

https://github.com/jtdudley2/java-nats/commit/d075adf67b853ef73d5b949f4280b88848708106

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