Building systems that last

Software has a shelf life. Most of what we build today won't survive five years in its current form. But some systems endure — not because they're over-engineered, but because they were built with the right constraints in mind.

Start with the constraints

The systems that last aren't the ones with the most features. They're the ones that understood their constraints from day one. What does this system need to do? What does it explicitly not need to do? The clearer you are about boundaries, the more resilient the result.

Favor boring technology

There's a reason PostgreSQL outlasts most of the tools built on top of it. Boring technology is boring because it works. It's been battle-tested, edge cases have been found and fixed, and the documentation is comprehensive. Choose boring technology for your foundations, and save the experiments for the edges.

Design for change

The only constant in software is change. Design your systems so that the most likely changes are the easiest to make. This doesn't mean building abstractions for everything — it means keeping things simple enough that future changes don't require rewrites.

Write code for humans

Code is read far more often than it's written. The next person to touch your code might be you, six months from now, with zero context. Write for that person. Clear names, small functions, obvious flow. The compiler doesn't care about readability, but your team does.