Summary
On October 9, 2026, Cloudflare introduced on-demand CPU and memory profiling for Workers and Durable Objects, letting developers generate interactive flamegraphs in production to find performance bottlenecks and memory leaks.
What changed
Cloudflare shipped an on-demand profiling capability that produces interactive CPU and memory flamegraphs for running Workers and Durable Objects in production, rather than requiring local reproduction or guesswork.
Why it matters
Production-grade profiling has been a gap for edge and serverless runtimes, where traditional APM tooling often doesn't reach. Interactive flamegraphs for Workers and Durable Objects let teams diagnose latency and memory-leak problems in live code, lowering the operational risk of running agent workloads and long-lived Durable Objects on Cloudflare at scale.
Evidence excerpt
Developers can now generate interactive flamegraphs in production to track down memory leaks and performance bottlenecks in Workers and Durable Objects.