Engineer Notes.

Interactive deep dives into the systems behind software. Each topic is broken down with diagrams, real examples, and step-by-step walkthroughs so you can see how things actually work under the hood.

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Topics

System Design

Load balancers, DNS, caching strategies, CAP theorem, and distributed consensus. The building blocks of scalable systems.

DevOps

Terraform, Kubernetes, VPC networking, and cloud infrastructure. From infrastructure as code to container orchestration.

Database

PostgreSQL internals, query execution, EXPLAIN ANALYZE, performance tuning, and architecture. From the parser to disk I/O.

Data Structures & Algorithms

Interactive walkthroughs of common patterns: two pointers, sliding window, heaps, graphs, and more. Step through each algorithm visually.