ericwoo_kr The Problem: Your React Tests Are Either Slow, Brittle, or Both Snapshot tests are a trap. I know because I walked straight into it. You write a toMatchSnapshot() call, feel productive, commit it, and three weeks later you’re approving a 400-line snapshot diff because someone changed a button’s aria-label. The test isn’t telling you anything … Read more
The Problem: Your Flask App Works Locally, Now What? Here’s the math that pushed me off EC2: a t3.micro instance runs you roughly $8-10/month whether it serves zero requests or ten thousand. Lambda charges $0.20 per million invocations plus compute time billed in 1ms increments. If your API gets sporadic traffic — a webhook receiver, … Read more
The Real Problem: Microsoft Office Licensing in Education Hits Different Mid-year budget cuts to Microsoft 365 are not a hypothetical — I’ve watched this happen to multiple school districts and community colleges. One day teachers have OneDrive syncing lesson plans, the next week IT is fielding panicked emails because accounts are locked and nobody can … Read more
The Situation That Made Me Pick a Side Four people. Zero dedicated designers. A founder, two engineers (including me), and a product manager who’d used Sketch once in 2019. We had two weeks to get a clickable, investor-ready prototype built for a B2B SaaS dashboard — the kind where you tap through three or four … Read more
My Stack After Burning Through a Dozen Tools Most “best tools for data science” lists are written by someone who watched a YouTube tutorial, got a Jupyter notebook running, and called it research. I know because I wrote one of those lists in 2022 and I’m embarrassed by it now. The tools I actually depend … Read more
The Problem With Most Node/Express API Tutorials Most Express tutorials are lying to you by omission. They show you how to wire up a route, return a JSON response, and call it a day. I’ve counted dozens of “build a REST API” posts that end with res.json({ message: ‘hello world’ }) and zero mention of … Read more
Why I Stopped Recommending Jira to Every Startup I Work With The breaking point was a Tuesday afternoon. I’d just joined a 6-person seed-stage startup as a fractional CTO — two backend devs, one frontend, a designer, a PM, and a founder who kept jumping in on tickets. Simple team. Clear scope. We needed to … Read more
The Problem That Made Me Test Both The breaking point wasn’t a crash or a missing feature. It was a Zapier bill. One Zap — a single lead routing workflow for one client — was burning through 400+ tasks per month. That’s a client on HubSpot sending form submissions to Google Sheets, triggering a Slack … Read more
The Real Problem: Your Support Queue Is a Dumpster Fire at 2am Tier-1 tickets will kill your team’s morale faster than any technical debt. Password resets, “how do I cancel my subscription,” “where’s the export button” — these questions have known answers, documented answers, and yet they were eating the first 3-4 hours of every … Read more
The Problem: Your E-Commerce App Refreshes Like It’s 2008 Your Django App Is Lying to Customers Right Now Here’s a scenario I’ve debugged more times than I want to admit: a sneaker drop goes live, two customers both see “1 item left in stock,” both click Add to Cart, both get a confirmation email — … Read more