Ateeb Hussain

ECourses Progress Report Week 3... Just went from admin panel to student side... Honestly answer, how does it look?

How do tech giants lookup for usernames?

A select query with unique constraint? It's not that simple when you billions of users.

AI won't tell you this, There are several algorithms to handle username lookups efficiently:

- Redis Hashmaps - Trie Structures - B+ Trees - Bloom Filters

What people normally post here on contra? Graphic Designing? System Design? Web Dev? What is it?

I’m building an LMS SaaS named eCourses — open‑source, community‑first, and designed to run cheap. Instead of hiding it in private repos, I’m shipping it in public: sharing code structure, architecture decisions, and failures on dev.to and here on Contra.

Building in public is...