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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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Installing and setting up PostgreSQL properly

A real, thorough PostgreSQL setup: installation, roles and permissions, psql, and connecting from application code.

11 min readUpdated 2026-09-04postgresqlsetuphands-on