Why We Made a Shirt About Cache Misses

We didn’t set out to start a merch brand. We set out to fix a website that loaded like it was being read aloud over a bad phone connection, found the usual suspect — a cache that wasn’t doing its job — and made the kind of joke you make at 11pm when you’ve been staring at a waterfall chart for three hours. “It’s not a bug, it’s a cache miss.” Someone laughed. Someone else said it should be on a shirt. Nobody in that Slack thread was joking anymore about twenty minutes later.

Here’s the thing about working in web performance: it’s a genuinely funny field, but almost nobody outside it knows that. You spend your days negotiating with browsers, arguing about whether a 200ms improvement is worth the engineering hours, and explaining to a stakeholder for the fourth time why “just make it faster” isn’t a ticket. The jokes that come out of that job are specific, a little dark, and extremely recognizable if you’ve lived it. They just never had anywhere to go except Slack threads that get archived and forgotten.

So we made them shirts instead.

The name — Unsnail — is the same instinct pointed at the brand itself. A snail is the universal shorthand for slow. Unsnailing something is what performance engineering actually is: taking the thing that’s dragging and making it move. It’s also just a good pun, which matters more than we’d like to admit.

We wanted this to feel like something a real dev-tools company would make, not a novelty account’s Etsy shop. That meant real fabric, printing that survives more than three washes, and copy that doesn’t try so hard it becomes the opposite of funny. The humor lives in the designs — the cache miss, the LCP threshold, the TTFB confession — not in exclamation points plastered across a homepage.

We also know exactly who this is for, because we are that person. If you’ve ever explained Core Web Vitals to someone who didn’t ask, if you’ve got a strong opinion about render-blocking resources, if “204 No Content” makes you smirk without needing it explained — this is your shirt.

This is the first drop, and it’s a small one on purpose. We’d rather ship eight shirts we’d actually wear than forty that exist just to pad a catalog. If they land, there will be more. Thanks for reading this far. Go forth, outrun the snail, and for the love of all that is holy, compress your hero images.