Welcome to Backend Docs — a comprehensive roadmap and knowledge base for mastering the art of backend engineering. This repository is a structured journey through the core concepts, architectures, and tools that power the modern web, from foundational principles to FAANG-level system design.
Saurabh Singh Rajput (SARS) 2nd Year CSE Student @ IIIT Bhagalpur
"Obsessed with innovation. Inspired by the vision of Steve Jobs and the engineering of Tony Stark."
This repository covers the complete backend engineering spectrum. Click on any of the advanced topics below to read the detailed FAANG-level notes:
- DSA: Advanced problem-solving strategies.
- Clean Code: Writing readable, maintainable code.
- OOP / SOLID: Mastery of design principles.
- Concurrency: Understanding threads, locks, and async basics.
2. 🌐 Backend Core
- HTTP Internals, REST vs GraphQL, API Design, Midleware, Security (JWT/OAuth), Error Handling & Observability. 👉 Read Notes
3. 🗄️ Databases
- SQL Deep Dive, Indexing Strategies, Transaction Isolation Levels, Connection Pooling, Sharding, and Replication. 👉 Read Notes
4. ⚡ Caching Layer
- Redis Internals, Memcached, Cache Invalidation, Eviction Policies, Cache Stampede solutions. 👉 Read Notes
5. 🏛️ Architecture Styles
- Monoliths, Modular Monoliths, Microservices, Event-Driven Architecture, Serverless, Hexagonal Architecture. 👉 Read Notes
6. 🔗 Distributed Systems
- CAP Theorem, Consistency Models, Leader Election (Raft/Paxos), Message Queues (Kafka/RabbitMQ), Distributed Locks. 👉 Read Notes
- Load Balancing, Auto-Scaling, Rate Limiting (Token/Leaky Bucket), Backpressure, Reverse Proxies (Nginx). 👉 Read Notes
- Unit/Integration/Contract Testing, Load vs Stress Testing, Chaos Engineering (Chaos Monkey), Health Checks. 👉 Read Notes
9. 🛠️ DevOps & Production
- Docker Multi-stage Builds, Kubernetes (K8s) Pods/Services/Deployments, CI/CD, Secrets Management, Observability (ELK, Prometheus). 👉 Read Notes
10. 🏆 System Design Mastery
- High/Low Level Design, Database Tradeoffs, Scaling Patterns (CQRS, Saga, Outbox), Resiliency Patterns (Circuit Breaker). 👉 Read Notes
- L1: Backend Fundamentals
- L2: Advanced Databases & Caching
- L3: Distributed Systems Architecture
- L4: Scalability & DevOps
- L5: System Design Mastery
I'm always open to discussing system design, backend architectures, or the next big thing in tech.
- GitHub: DevSars24
- LinkedIn: Saurabh Singh Rajput
Stay hungry. Stay foolish. 🍎