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Tutorials, deep-dives, and insights on Java, DSA, System Design, AI, and more.
Big O is how you talk about algorithm efficiency in interviews. Here's what each notation means and how to analyse code on the spot.
DI is one of the most misunderstood patterns in software. Here's a clear explanation — from the problem it solves to how Spring's IoC container works under the hood.
Cache-aside, write-through, write-behind — different caching strategies have very different consistency guarantees. Know when to use each one.
Skip the boilerplate. Learn how Spring Data MongoDB turns your domain classes into a fully-functional persistence layer in minutes.