Cloudflare Workers Migration

This walks you through porting Lambda functions, Express apps, Vercel routes, and Node.js code to Cloudflare Workers. It includes a decision tree for choosing migration strategies, a comparison table showing Workers' near-zero cold starts versus Lambda's 100-500ms, and the top 10 errors you'll hit (fs is not defined, Buffer missing, process.env undefined). The before/after code examples are straight to the point, especially for Lambda handlers and Express middleware. Most helpful is the Node.js compatibility matrix showing what works with nodejs_compat_v2 and what needs alternatives like swapping fs for R2 storage. If you're moving edge-ward and hitting compatibility walls, this is a solid reference to keep nearby.