"Moving Fast"
summary
Claims Facebook cuts median interactive page times from about 5s to 2.5s (June–Dec) and maintains that by splitting work into a fast path and slow path (BigPipe and Primer) and by deploying new backends in parallel with gradual traffic ramping. Tools include a PHP profiler (pHProf) and per-feature alerting tuned to the owner’s scope so regressions are visible to the person who can fix them. Org model pairs a central tools team with a dedicated performance point on each product team.
AI-written summary · about
chapters (10)
- 0:00Introduction
- 1:06Why speed matters
- 3:09Small changes keep sites reliable
- 4:13Cost of moving fast
- 5:18New code slows things down
- 7:24Fast vs slow paths
- 10:14Performance engineering
- 11:20Alerting granularity
- 13:50Team structure for ownership
- 17:21Key takeaways
