#DevtoFastify

Fix CORS Errors in Node.js Fastify – Complete Guide for Developers Cross‑Origin Resource...

Simulation Theater That placeholder appeared on a completed simulation whose predictions already named the actual region. The records were…

How to Fix CORS Errors in Node.js Fastify Cross‑Origin Resource Sharing (CORS) errors are...

Originally published at HOL An unauthenticated request can skip path-scoped auth middleware in Fastify apps that use @fastify/middie. Middie decides whether to run path-scoped auth by looking at the raw request target.…

Originally published at HOL An unauthenticated request with a malformed URL can skip Fastify not-found auth and land in a private sibling plugin fallback.…

How I built a voice agent that books 30-minute appointments with ElevenLabs and Cal.com, and why the Fastify backend is what keeps the model from inventing times.

Multi-tenancy does not always belong at the root of an application. A production API may have routes...

A product endpoint can serve your frontend, a customer integration, and a scraper through the same...

Integrating Razorpay into a modern TypeScript backend is full of undocumented landmines: flipped HMAC arguments between orders and subscriptions, Fastify body parser mutations that break webhook signatures, and strict RBI recurring mandate failures.…

I've been building a publishing tool , and I chose Fastify for the backend. The reasoning was simple:...

When scaling modern full-stack architectures—especially when serving enterprise Angular Server-Side...