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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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Operating Systems

Foundations of Operating Systems3

Processes & Threads4

Inter-Process Communication3

Concurrency & Synchronization4

CPU Scheduling4

I/O & Disk Scheduling3

Memory Management4

Virtual Memory3

What a file actually is, and how directories find them
File allocation methods — where a file's actual bytes live on disk
Tracking free space, and surviving a sudden power loss
Putting it all together — the full journey of writing a file

Building Your Own OS in C++6

Lessons

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Operating Systems

Foundations of Operating Systems3

Processes & Threads4

Inter-Process Communication3

Concurrency & Synchronization4

CPU Scheduling4

I/O & Disk Scheduling3

Memory Management4

Virtual Memory3

What a file actually is, and how directories find them
File allocation methods — where a file's actual bytes live on disk
Tracking free space, and surviving a sudden power loss
Putting it all together — the full journey of writing a file

Building Your Own OS in C++6

Learn Operating Systems File Systems

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Putting it all together — the full journey of writing a file

A single, concrete walk through everything this entire course covered, following one file write from your keyboard down to the physical disk platter.

9 min readUpdated 2026-09-03operating-systemsfile-systemsreviewsynthesis