Workers Builds: integrated CI/CD built on the Workers platform

Cloudflare outlines the architecture and rationale behind Workers Builds, an open-beta CI/CD pipeline for Workers that integrates with GitHub/GitLab to trigger low-latency, containerized builds and deployments; the system employs a Client Worker with Hyperdrive-backed PostgreSQL for configuration, a Scheduler and Build Buddy Durable Objects for orchestration and status/log management, DO storage plus Workers Logs for observability, Smart Placement to minimize RTT to the database, JavaScript-native RPC to reduce boilerplate, robust testing with cloudflare:test and Vitest, metrics via Workers Analytics Engine and Grafana, and previews build caching on R2 to accelerate subsequent builds.