System Design: Mobile OS Update Rollout

Name: Top 5 Most-Used Deployment Strategies
Uploaded: 2023-06-06T08:30:03-07:00
Duration: 10 min
Channel: ByteByteGo
Description: Rolling, blue-green and canary — the rollout mechanics a staged OS update is built on, which is what this question is really testing.

You must deliver a zero-day security patch to 500M mobile devices. 80% must update within 3 days, 100% within 5 days. Coordinator service must respect carrier/CDN constraints, handle phased rollouts, and provide real-time telemetry.

System Design: Mobile OS Update Rollout

What clarifying questions would you ask the interviewer?