The long reads
Each reel is a minute long. Here the same ideas get the room they deserve: the details, the trade-offs and the sources.
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Cloud & systems
Vertical vs horizontal scaling: when to use which
Bigger server or more servers? Both are right in the right place. The interview answer, real AWS prices, and the two mistakes where money quietly burns.
7 Oct 2026 · 4 min Cloud & systemsWhat is system design? A beginner's map
Ten users and everything works. A million at once and the server falls over. A plain-language map of the five pieces every large system is built from.
7 Oct 2026 · 2 min