How we cut CDN metadata lookup latency by 91%

- Vercel: 70 events in the last 90 days
- Previous: earlier the same day · Protect production deployments for free on every plan
What happened
We replaced per-path CDN routing metadata with indexed shards of bounded size, cutting P99 path metadata lookup latency by 91% and making deployments faster. Here's how we did it.
Summary assembled by rule from the sources below