Backend Architecture Labs 🚀

This repository contains hands-on code, experiments, and notes from my advanced backend + DevOps learning cohort. It includes scalable system patterns, communication strategies, infrastructure tools, and real-world implementations.

📌 Covered Topics

🧪 Code-Driven Labs

These folders contain real code and examples:

• WebSockets Communication – Real-time server-client implementation
• Redis Pub/Sub & Queues – Messaging systems and job queues
• DDoS Prevention & Rate Limiting – Middleware using libraries like express-rate-limit
• Singleton Pattern + Pub/Sub – Design pattern demos in Node.js
• WebRTC (P2P Communication) – Simple peer-to-peer video/audio streaming
• gRPC in Node.js – Proto-based client-server communication
• Testing in the MERN Stack – Unit, integration, and E2E testing setups
• Monitoring & Logging – Basic New Relic + custom logging code
• Prometheus + Grafana – Metrics instrumentation and visualization
• Kubernetes Configs – Pod, service, and deployment definitions

📘 Theory, Architecture & Notes

These topics are mostly notes, diagrams, and reference files. Some may include lightweight code or configs if applicable:

• Capacity Estimation
• Horizontal & Vertical Scaling
• Scaling Node.js & Auto Scaling Groups (ASGs)
• Indexing in Databases
• Normalization in Databases
• 0 → 1 Project Setup (Farewell Project)

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🗂 Folder Structure (Example)