date: 2025-07-30 topics: [backend, nodejs, clean-architecture, devflow, 100DaysOfCode] day: 14

🚀 Day 14 – DevFlow Backend: DONE 🎯

After 30 days of deep backend engineering, I'm thrilled to announce that the DevFlow backend is officially complete!

What started as an idea to build a scalable Q&A platform evolved into a real-world project — built from scratch, without tutorials, following real-world principles.

🔧 Key Features Built

✅ JWT Auth + Refresh Tokens
✅ Role-based access control
✅ Full Q&A system (Questions + Answers)
✅ Nested replies with recursive logic
✅ Likes/Dislikes using clean reaction schema
✅ Follow/Unfollow system (social graph)
✅ MongoDB + Redis for caching/OTP
✅ Husky + Lint-Staged + ESLint for code quality
✅ Modular, testable codebase with clean architecture
✅ Docker-ready backend

🧱 Tech Stack

Node.js + Express
MongoDB + Mongoose
Redis (OTP + caching)
Docker (local dev & prod-ready)
Mongoose + Repositories + Services Pattern
Swagger-style route docs
JSDoc comments throughout

🧠 Architecture

Inspired by clean, scalable microservice principles
Separated into:

Controllers (API logic)
Services (business logic)
Repositories (DB layer)
Utils, middlewares, validators, and more

📦 Repo Link

🔗 DevFlow GitHub Repository

🧠 What I Learned

Scalable folder structure matters more than you think
Writing testable service layers pays off long-term
Recursion, auth flows, job queues, and reaction systems all mirror real-world challenges
Clean code ≠ fancy syntax → it means clarity & maintainability

🎯 What’s Next?

Start building the frontend (Next.js) — fully typed with TypeScript
Hook into backend endpoints and test real-world flows
Add API docs & start writing test cases

💬 Reflection

I didn’t just build endpoints — I built a real system.
This is how we level up from students to engineers.

If you’re a developer, student, or backend learner — feel free to fork, explore, or ask questions.
Let’s keep building 💪

#100DaysOfCode #DevFlow #BuildInPublic #BackendDev #CleanCode #NodeJS #OpenSource