Building Real Systems vs Toy Projects

There's a difference between a project that works on your laptop and a system that works in production. I've done both, and the gap is bigger than most people think.

A toy project is something you build to learn a framework, impress in an interview, or fill a portfolio. There's nothing wrong with that. But a real system has users, consequences, and failure modes you didn't plan for.

What makes something real

A system is real when:

• People depend on it. At Blackhawk, the monitoring system I built wasn't a demo. Engineers used it to catch outages. If it broke, real alerts didn't fire.
• Scale forces design decisions. With Splurge, handling millions of daily requests meant I couldn't use the simplest approach for everything. Proxy rotation, connection pooling, and retry logic weren't optional. They were survival.
• You can't restart it. A personal project can crash and you just rerun it. A production system needs to recover gracefully, log what went wrong, and keep serving.

Why I prefer building real things

When you build something real, you learn things that tutorials can't teach you: how to debug a system at 2am when logs are ambiguous, how to design schemas that won't break when requirements change, how to write code that someone else can maintain.

I've learned more from one production pipeline than from a dozen side projects combined. The side projects taught me syntax. The production systems taught me engineering.

The takeaway

Both matter. Toy projects are where you learn tools. Real systems are where you learn judgment. I try to spend most of my time on the second.