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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

Demand paging — running programs bigger than your RAM
Page replacement algorithms — deciding what to kick out
Thrashing and the working set model

Building Your Own OS in C++6

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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

Demand paging — running programs bigger than your RAM
Page replacement algorithms — deciding what to kick out
Thrashing and the working set model

Building Your Own OS in C++6

Learn Operating Systems Virtual Memory

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Page replacement algorithms — deciding what to kick out

When RAM is full and a new page needs to come in, exactly which existing page should be sacrificed, and the surprising paradox lurking in the answer.

10 min readUpdated 2026-09-03operating-systemsvirtual-memorypage-replacementbelady-anomaly