Topics

• Tech Radar - further assessment discussions from Tuesday’s Arch Study Group: Tech Radar

• Health/monitoring of CI / CD pipelines - impact on squads? +++

  • https://openedx.atlassian.net/wiki/spaces/ENG/pages/1789526017/Operating%2BReviews

  • edx-platform

    • CI to master: ~40mns

    • merge → stage → e2e → prod: ~90mns

      • blocked on previous deploy

  • monitoring CD

    • splunk - though could be unreliable

  • impact on squads

    • e-commerce: CI is long here as well (~40mns), CD is much better though; manual CD after ensuring e2e tests pass

    • ORA: not a pain-point right now

    • edx-platform: couldn’t give a good estimate to stakeholders since uncertainty with rollbacks/etc

    • Actual impact on a team: no code merges after 3pm on weekdays, no code merges after 12pm on Fridays

    • Note:

      • Since CI/CD is about 2-hours, can’t fix-forward reasonably. We need to rollback and rollback all other concurrent changes.

      • Separate paths and testing considerations for infrastructure-level changes versus feature changes

        • feature changes: can use toggles to decouple release from enablement/monitoring in prod

        • infrastructure changes: can use canary releases for controlled testing - separated from the normal pipeline flow to keep pipeline flow

• Django Signals + best practices! +

  • https://discuss.openedx.org/t/hooks-based-extension-of-open-edx/2867

  • Event propagation (e.g., User Profile changed)

    • Django Signals → All other monolith apps and plugins

      • Message Bus → All other IDAs & Websocket service & external services (via xAPI/Caliper)

        • Websocket notification → MFEs

          • MFE React Hooks → Frontend components

• ChangeLogs - what are they? ++

  • Changelogs

  • https://xkcd.com/1296/ ← example of why we don’t just use the git commit history

Backlog of Questions/Discussions

• Recent MFE docs

  • [Archive] MFE Rewrite Statusarchived

  • MFE Definition of Done

  • Recommendation: When to MFE

• Requirements for public reposarchived

• Changelogs

  • if you are doing them, what would make it easier?

  • If you aren’t doing them, what would help get you started?