Big ideas,
served in small bites.

Core concepts behind building scalable, reliable distributed systems. Covers the patterns and trade-offs every backend engineer needs to know.

The classic Gang of Four patterns visualised with UML diagrams and annotated code. Creational, structural, and behavioural patterns in one place.

A deep dive into how PostgreSQL actually works under the hood: storage, indexing, MVCC, transactions, and the WAL explained with diagrams.

Production-grade cloud patterns for event-driven systems, serverless, resilience, data management, and deployment strategies.

From neurons to transformers. Everything you need to understand how large language models are built, trained, and deployed.

The hard engineering problems behind shipping reliable AI agents: memory, concurrency, retries, observability, and failure handling in production.