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Experiencing a significant performance problem #2943

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@alexblack

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@alexblack

Hi, we'll look at posting some more thorough steps to reproduce and details, but, right now we're experiencing some major issues, and any insights or suggestions would be helpful.

It looks like an update in our mobile app is causing a lot more requests to hit our parse-server, and our deployment at Heroku is not standing up, requests are taking 30s to respond.

New relic analysis seems to indicate that 80% of the time is spent in handleParseHeaders

We're also seeing more errors than normal out of one of our cloud functions, a beforeSave trigger. We are working change things in our app to minimize this, but, in the meantime we're still in bad spot.

Details:

  1. Parse-server 2.2.23 (also tried rolling back to 2.2.22, no change)
  2. Database is Mongo, at mLab, no visible change in metrics there, it looks good to me
  3. Deployed at Heroku, on (4) 2x dynos
  4. Using node express

screenshot 2016-10-26 11 47 00

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