What is your app actually doing in production?

on YouTube ↗18m

" summary

Expo's open-source Expo Observe library and the hosted EAS Observe collector capture OpenTelemetry-style startup and per-screen metrics (launch, bundle load, render, manual time-to-interactive), device metadata, build and OTA update linkage, and custom events so teams can compare specific builds and updates across real users and devices. Dashboards show problematic updates (example: 500% increase in minimum time-to-render), session timelines, request-timing plans, and an AI handoff; the service is in public beta and is free for up to 10K monthly active users for at least three months.

AI-written summary · about

" chapters (12)

1. 0:00Introduction to Expo's vision
2. 2:12What happens in production
3. 4:22Why local dev differs from production
4. 6:11Introducing Observe for observability
5. 7:36Startup metrics with Observe
6. 10:01Tracking per-screen performance
7. 11:06Versioning challenges and solutions
8. 12:55Analyzing update performance
9. 13:39User journey insights
10. 14:43Agentic development with Observe
11. 16:26Future plans for Observe
12. 17:08EAS Observe public beta

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