Works locally, fails on deploy? Learn the difference between Node.js and Edge Runtime. Fix import errors and configure Import Maps correctly.
How to deploy without shutting down servers. Differences between Rolling, Canary, and Blue-Green. Deep dive into Database Rollback strategies, Online Schema Changes, AWS CodeDeploy integration, and Feature Toggles.
Deployed your React app and getting 404 on refresh? Here's why Client-Side Routing breaks on static servers and how to fix it using Nginx, AWS S3, Apache, and Netlify redirects. Includes a debugging guide.
Why is it called 'Canary'? How does it differ from Rolling and Blue/Green deployments? We explore the strategy of releasing to a small subset (1%) of users first to detect issues before they impact everyone. Includes details on Metrics, Tools, and advanced strategies.
Stop using 'any'. How to build reusable, type-safe components using Generics. Advanced patterns with extends, keyof, and infer.
What if you REALLY need high performance? (e.g., Image resizing, Cryptography). JS/TS might be too slow on the Edge.
Supabase Edge Functions support WebAssembly (Wasm).
You can write your logic in Rust, compile it to .wasm, and import it in Deno.
// Deno maps .wasm files to standard imports
import { instantiate } from "./lib.wasm";
serve(async (req) => {
const { add } = await instantiate();
return new Response(`Rust says: 2 + 3 = ${add(2, 3)}`);
});
This unlocks near-native performance (~2x-10x faster than JS) while keeping the Cold Start near zero. This is the future of Edge Computing.
Treat it not like Node.js, but like a 'Server that thinks it's a Browser'. If you respect the constraints of the Edge (Lightweight, Web Standards), it rewards you with infinite scalability and zero latency.