Deep DivesJuly 18, 2026·7 min read

Understanding Cloudflare Workers Architecture

V8 isolates, edge computing, minimal latency.

V8 Isolates

Same engine as Chrome. No cold start (~0ms), low memory, fast execution.

Edge Execution

Request → nearest data center → V8 isolate → response. ~1-3ms overhead.

Limitations

  • HTTP/HTTPS only (no TCP/UDP)
  • CPU time limits
  • No persistent storage

#cloudflare workers#architecture#v8 isolates

Ready to try it?

Deploy your first load balancer in 90 seconds. Free under 100k requests/day.

Start free →