Practical notes, diagrams and interview-focused resources to help you understand software engineering from first principles.
Choose a path and explore practical resources designed to help you understand, practice and build stronger engineering fundamentals.
Practical engineering resources, organized by topic and built for understanding.
Client - Server Architecture is one of the most fundamental concepts in System Design and backend development. Almost every application you use today - websites, mobile apps, banking applications, e-commerce platforms, and social media applications - uses the basic idea of a client communicating with one or more servers.
Understanding stateless and stateful server architectures is essential for designing scalable distributed systems. Learn how servers manage client sessions, maintain state, handle requests, and achieve horizontal scalability with practical examples and architectural diagrams.
Learn how scalability works in system design, why systems need to scale, and how vertical and horizontal scaling help applications handle increasing traffic and workloads. Explore scalability challenges, architectural patterns, practical examples, and real-world strategies for building scalable distributed systems.
Message queues are a fundamental building block for designing scalable and resilient distributed systems. They allow services to communicate asynchronously, absorb traffic spikes, decouple components, and process background work independently.
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