Vercel Accelerates Sandbox Domain Routing Globally by Distributing Resolution to 19 Regions
Vercel has optimized its sandbox domain routing architecture, achieving an average 18-fold latency reduction globally. Previously, domain resolution relied on a centralized store, which added significant latency for requests originating far from the database. The new system replicates domain mappings to all nineteen compute regions, allowing local lookups before requests are routed to sandbox processes.
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| Aspect | Before / Alternative | After / This |
|---|---|---|
| Resolution Architecture | Centralized database lookup | Distributed regional replicas across 19 regions |
| Median (p50) Latency | 62 ms | 3.4 ms |
| Tail (p99) Latency | 549 ms | 121 ms |
| Remote Regional Performance | Slower resolution in areas far from primary store | Up to 112x faster in Sydney and 146x faster in Cape Town |
| Developer Configuration | Standard routing configurations | Automatic upgrade with zero configuration changes required |
Source: Vercel Changelog
This page summarizes the original source. Check the source for full details.
