Topic

Platform and cloud

Practical guides to cloud platforms, deployments, caching, edge runtimes, and reliable production operations.

A sealed response envelope being copied into a new editable envelope at the edge

July 17, 2026 2 min read

Fix “Can’t Modify Immutable Headers” in Astro on Cloudflare

Why cached Cloudflare Worker responses have immutable headers in Astro middleware, and the safe Response-cloning pattern that prevents the production error.

Read article

Platform and cloud