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Tutorials, deep-dives, and insights on Java, DSA, System Design, AI, and more.
Most engineers fail system design interviews not because they lack knowledge, but because they lack a framework. Here's the repeatable 6-step approach that works.
Choosing between SQL and NoSQL is one of the most common system design questions. Here's a principled framework — not just "it depends".
Cache-aside, write-through, write-behind — different caching strategies have very different consistency guarantees. Know when to use each one.
CAP theorem says you can only pick 2 of 3 properties. But what does that mean in practice? And which systems are CP vs AP vs CA?
Saga, circuit breaker, API gateway, event sourcing — the design patterns that make microservices work at scale and that interviewers ask about.