Vercel Sandbox routing is now 18x faster globally

Vercel announced that requests to Sandbox public domains are now routed through regional replicas instead of a single centralized store, reducing median domain lookup latency from 62 milliseconds to 3.4 milliseconds. The change applies automatically to every request, eliminating the need for manual configuration or additional steps from developers. Latency improvements are most pronounced in regions farthest from the previous store, with up to 112 times faster lookups in Sydney and up to 146 times faster in Cape Town at the 99th percentile. This update affects all sandbox domains created using the sandbox.domain() SDK call, ensuring consistent performance gains globally.

The routing adjustment leverages Vercel’s distributed infrastructure to serve domain resolutions from the nearest regional replica, minimizing network hops and reducing latency for end users. Developers using Sandbox domains will observe faster response times without altering their existing code or deployment processes. The improvement is particularly beneficial for applications with geographically dispersed users, as requests now resolve closer to their origin. No changes to pricing or billing are associated with this update, maintaining the same cost structure for developers.

Median latency for domain lookups in Sandbox environments has dropped from 62ms to 3.4ms, representing an 18-fold speed increase across all regions. The most significant gains occur in remote locations, where latency reductions reach up to 146 times in Cape Town and 112 times in Sydney at the 99th percentile. These improvements are automatic and require no intervention from developers, ensuring immediate benefits upon deployment. The update applies uniformly to all sandbox domains, regardless of their creation date or usage patterns.

Vercel’s Sandbox routing now resolves public domains from regional replicas, cutting median lookup latency from 62ms to 3.4ms and delivering up to 146x faster performance in Cape Town. The change is automatic for all sandbox domains and does not affect pricing. Latency improvements are most pronounced in distant regions, with up to 112x faster lookups in Sydney at the 99th percentile. Developers can expect consistent, global performance gains without modifying their existing configurations.