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Data Structures & AlgorithmsComplexity analysis up to graphs and DP.Operating SystemsProcesses, scheduling, memory and concurrency.Database Management SystemsRelational modelling, transactions and indexing.Computer NetworksFrom wires and radio waves up to the web.

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AI Inference EngineeringQuantization, batching and KV caching in production.System DesignScalable systems from first principles.Context EngineeringDesigning the context that LLMs actually reason over.Docker & KubernetesContainers and orchestration, explained.

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SQL & Databases

Database Foundations4

SQL Fundamentals5

Joins & Aggregation5

Design & Normalization4

Transactions & Performance4

PostgreSQL Deep Dive4

What is PostgreSQL, and why does it exist?
Installing and setting up PostgreSQL properly
PostgreSQL-specific features that set it apart
PostgreSQL in the cloud vs self-hosted: making the real decision

MySQL & MariaDB4

NoSQL & Choosing the Right Database5

Advanced SQL Toolkit5

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SQL & Databases

Database Foundations4

SQL Fundamentals5

Joins & Aggregation5

Design & Normalization4

Transactions & Performance4

PostgreSQL Deep Dive4

What is PostgreSQL, and why does it exist?
Installing and setting up PostgreSQL properly
PostgreSQL-specific features that set it apart
PostgreSQL in the cloud vs self-hosted: making the real decision

MySQL & MariaDB4

NoSQL & Choosing the Right Database5

Advanced SQL Toolkit5

Learn SQL & Databases PostgreSQL Deep Dive

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What is PostgreSQL, and why does it exist?

The history and philosophy behind PostgreSQL, and why it's become the default choice for so many new projects.

9 min readUpdated 2026-09-04postgresqldatabase-systems