What Building a Gantry Crane Taught Me About Software Architecture

I inherited from my father a strong tendency to over-engineer everything I build. Generally, it’s a good trait, but it comes with certain trade-offs, especially in the physical world. The free-standing shelving in my garage holds plenty of weight, but it’s so heavy I dread ever moving it.

When planning a gantry crane to lift 2,000 pounds, I vowed to break tradition and build just enough.

I failed spectacularly.

Instead of spending $250+ on a sufficiently sized I-beam from the Charlotte Metal Supermarket (yes, this exists), I found one for just $100 on Facebook Marketplace. When I checked its load capacity, I discovered it could safely lift 70,000 lbs, or 35 times my intended load.

Classic Ballance overkill.

While this extreme overengineering is unnecessary for a gantry crane, it’s exactly the mindset you should adopt in software development. Here’s why:

- Unpredictable Traffic: Sudden growth can overwhelm systems designed for current needs.

- Technical Debt: Systems built solely for today quickly accumulate complexity and fail as needs evolve.

- Costly Downtime: Unlike physical tools, software outages can instantly harm user trust and revenue.

- Future-Proofing: It is far easier (and cheaper) to build scalability from the start than to retrofit later.

Of course, there’s good and bad overengineering:

- Bad: Microservices for tiny apps or premature optimization.

- Good: Designing robust, scalable architectures from day one.

Physical builds should match actual needs. Software can and should anticipate future growth. So, keep building your software absurdly strong; it might just save your business.

Build your software accordingly. Your gantry crane, perhaps not.