Most developers start their journey by writing code.

Functions, classes, APIs — that’s where the focus usually is.

But at some point, you realize something uncomfortable:

Writing code is not the hardest part. Designing what to build is.

The gap most developers don’t notice

You can write perfectly clean code, follow naming conventions, and still end up with a system that:

breaks when traffic increases

becomes hard to modify

turns into a debugging nightmare

This usually happens not because of poor coding, but because of missing design thinking .

So what is System Design?

System Design is the process of deciding:

What components exist in your system

How those components interact

How the system behaves under real-world conditions

It’s less about syntax, and more about structure and decisions .

A simple way to think about it:

Coding = implementing behavior

System Design = defining structure and flow

HLD vs LLD (without overcomplicating it)

When people talk about system design, they usually…