Extra Robustness

https://github.com/cubejs/cluster2/tree/cluster3 is about to GA, I’m quite excited for putting it together.

A few things we added on the way are quite interesting:

  • nanny monitoring for irresponsive workers
  • bruteforce killing via ‘SIGTERM’ and use exception to determine if the process has been actually collected
  • pause/resume of a worker (for taking it out of traffic and do explicit GC!)
  • warmup sequence rewrite to put warmup worker on different ports (ensure each gets warmed up! before serving 1st request)

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