[$600] Performance issue

[jmgasper]

As discussed in Slack, investigate performance issue for user subhat

[jmgasper]

Challenge https://www.topcoder.com/challenges/c171a064-5158-4e02-92c6-08b163c89df7 has been created for this ticket.

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[jmgasper]

Challenge https://www.topcoder.com/challenges/c171a064-5158-4e02-92c6-08b163c89df7 has been assigned to obog.

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[atelomycterus]

Added some details from Slack:
"i just clicked on “Challenge Forums” with the subhat user and it went immediately, because she’s tied to no challenges… but then i went back to Public Forums, it takes the 45sec"

:

[atelomycterus]

Perfomance issue: 'subhat' user viewed a home page:
Trace - https://app.tideways.io/o/Topcoder/Discussions/trace/gLhPqHsBcNBBDkEdLLDp/summary?m=60&s=web&env=production

The performance issue exists with any category page/discussion page for 'subhat' user:

[atelomycterus]

@jmgasper Please apply PR-topcoder-platform/forums-groups-plugin#93. Thanks!

Additional Changes

• Added an event marker if there is no UserGroupCache
• Added a custom variable (UserID). We can understand who this trace is associated with:
  

The data is only displayed when the request trace is enabled in Tideways.

Local Testing

Before

After

Testing on DEV/PROD

Create a new user. Don't register for any challenges. Go to Vanilla and check response time.

[jmgasper]

Thanks - tested with a couple users I had on dev that were new and it seems great.

[jmgasper]

Payment task has been updated: https://www.topcoder.com/challenges/c171a064-5158-4e02-92c6-08b163c89df7
Payments Complete
Winner: obog
Copilot: ghostar
Challenge c171a064-5158-4e02-92c6-08b163c89df7 has been paid and closed.

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[jmgasper]

Deploying to production now.