Engineering insights & product updates
Deep dives into configuration delivery, real-world case studies, and lessons learned shipping features to billions of users.
How we built our edge delivery network on Cloudflare Workers
We started with a centralized API. Now ConfigDate flag evaluations happen at 280+ edge locations globally, with sub-25ms p99 latency. Here's how we built it, why Cloudflare Workers was the right choice, and what we'd do differently next time.
Read full article →Feature flags vs. configuration: when to use what
They're not the same thing. We break down when you need toggles for code paths versus structured config for runtime values.
Read more →Progressive rollout: lessons from 10 billion config reads
Canary deployments aren't just for code. We share patterns for safely rolling out configuration changes at scale.
Read more →Why we ditched gRPC for HTTP/3 at the edge
gRPC was overkill. HTTP/3 is faster, simpler, and plays nicer with CDNs. Here's our migration story.
Read more →The case for treating configuration as code
GitOps isn't just for Kubernetes. Managing flags in version control reduces human error and enables better auditing.
Read more →Reducing p99 latency from 150ms to 42ms
Five years of incremental improvements. We trace every millisecond and share the bottlenecks we found along the way.
Read more →Implementing kill switches without redeploys
Critical bugs shouldn't require a production deployment. We show how to design code for instant disable via feature flags.
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