🧒 Explain like I'm 5
Imagine you have a library of books. The books on your desk are easy to reach but might be outdated. Books in the library are harder to get but are always the latest edition. Choosing where to keep your books is like deciding where to cache data on a website.
Interactive quiz
Check your understanding with an instant-feedback quick check.
Detailed notes
Senior-level deep dive: internals, pitfalls, and a self-interview ladder.
Practice with AI feedback
Answer out loud, get scored on correctness, depth, and clarity.
