🚀 Stop Building OTP Systems from Scratch — I Built a Complete Redis-Based Verification Engine for Node.js
🚀 Stop Building OTP Systems from Scratch — I Built a Complete Redis-Based Verification Engine for Node.js Authentication flows look simple… until you actually build them in production. At first, I...
Source: DEV Community
🚀 Stop Building OTP Systems from Scratch — I Built a Complete Redis-Based Verification Engine for Node.js Authentication flows look simple… until you actually build them in production. At first, I thought OTP verification was just: Generate a code Store it Verify it But very quickly, things started breaking down. 🤯 The Hidden Complexity of OTP Systems In real-world applications, OTP is just the beginning. You also need: ⏳ Expiry handling 🔁 Retry limits 🚫 Abuse prevention (brute force) 🔑 Token-based verification 🔗 Email verification links (magic links) ⚡ High performance under load 👉 A “simple OTP system” quickly becomes a full verification infrastructure. 😤 The Problem with Existing Solutions While exploring existing libraries, I noticed: ❌ Too many dependencies ❌ Over-engineered abstractions ❌ Tight coupling with email/SMS providers ❌ Not flexible for custom flows Most libraries solve one problem, but not the whole system. 💡 The Idea: A Unified Verification Layer Instead of s
