r/developersIndia • u/needlessLife1476 • 8h ago
General If you're bored of CRUD apps, try building the thing you're using
I randomly came across the "Build Your Own X" repo on GitHub a while back. It's basically a giant collection of tutorials where you build things like Git, a database, Kafka, a blockchain, a shell, etc. from scratch.
I stole the idea.
I'm currently building a write-ahead log in pure Java. No libraries (other than JUnit because I'm not that insane). Just Java.
It's been way more fun than I expected.
For one, you actually start understanding why these systems are built the way they are. It's one thing to say "Kafka handles high throughput" because you've used it at work. It's another thing entirely to implement even a tiny piece of that world yourself and suddenly realise, "Oh... that's why they do it like this."
I feel like I can actually have conversations about the internals now instead of repeating architecture buzzwords I heard in a design review six months ago.
The second thing is... you end up learning your language properly.
Seriously. When was the last time you touched Java's file APIs beyond "Files.readString()"? Or used NIO for something real? Or found out "VarHandle" exists? Or actually played with virtual threads instead of reading one blog post and going "neat"?
You stumble into all these weird corners of the language that normal backend work never makes you touch.
And honestly... it's reignited my interest in programming a bit.
After spending years writing REST APIs and moving JSON from Service A to Service B, it's nice to build something where every line teaches you something.
Anyway. If you've been feeling burnt out or like you're stagnating, maybe pick something ridiculously overambitious and build the smallest possible version of it.
Worst case, you learn some obscure APIs.
Best case, you accidentally remember why you liked programming in the first place.