🚀 Stop Building OTP Systems from Scratch — I Built a Complete Redis-Based Verification Engine for Node.js

Most developers think OTP systems are simple. Until they try building one in production. Suddenly you’re dealing with: Expiry issues Retry abuse Race conditions Token flows Magic links 👉 And your “simple OTP system” becomes a full verification engine. 🤯 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 complex infrastructure problem. 😤 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 stitching multiple tools together, I built: ** 👉 redis-otp-manager** A lightw