// blog

Engineering Blog

Deep dives, lessons learned, and engineering culture from the team at Alloy.

How We Evaluate 100,000 Identities Daily Without Breaking a Sweat

A look at the architecture behind Alloy's evaluation engine — how we coordinate between Typhon and Chimera to call 270+ data vendors in real time while keeping p99 latency under 3 seconds.

Charles Hearn·Mar 15, 2025·2 min read

// TypeScript// Engineering

Migrating to TypeScript in a Live Codebase (Without Stopping Feature Work)

TypeScript strict mode in a 6-year-old JavaScript codebase sounds terrifying. Here's the incremental approach we took to add type safety without blocking shipping.

Sarah Chen·Feb 28, 2025·2 min read