Serenity

A calm space for curious minds.

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How Databases Actually Work: What Happens When You Run a Query

You run SELECT * FROM users every day. But what actually happens inside the database engine? Indexes, B-trees, query planners, buffer pools — all explained.

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Inside the Database Engine
Inside the database engine / Open to inspect

What Really Happens When You Click a Link

That instantaneous flash between clicking a link and seeing a webpage is actually a marathon — DNS lookups, TCP handshakes, TLS negotiations, and a full rendering pipeline, all in milliseconds.

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The Ghost in the Shell

Are we building tools that help us think, or tools that replace thought? An analysis of copilot-driven development.

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How Git Actually Works Under the Hood

Git doesn't store diffs — it stores snapshots. Understanding the object model, the DAG, and how branches are just text files.

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Philosophy

The Ghost in the Shell

Are we building tools that help us think, or tools that replace thought? An analysis of copilot-driven development.

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