Ideas, Experiments, and Lessons Learned
It was 2 AM when my phone started buzzing. Not once, not twice — it went full siren mode. Our main API was timing out, and the error messages were everywhere. Here’s what happened. The Setup We had a simple users table. Nothing fancy — just the usual stuff: id, email, name, created_at. We needed…
It was 2:14 AM when my phone started buzzing. Not the normal notification buzz — the panic buzz. Our main API was returning 500 errors across the board. I stumbled out of bed, opened my laptop, and saw it: our PostgreSQL database had ground to a complete halt. What Was Happening The dashboard showed CPU…
It Started With a Simple Request Monday morning. Coffee in hand. I open my laptop ready to knock out some tickets. Then I see it — a Slack message from our QA team: Hey, the user profile endpoint is returning 500 errors for some users. Easy fix, I thought. Probably some null pointer or missing…
It was 2 AM when my phone started buzzing. Production server down. Database connections maxed out. Great. What Happened We had a simple feature — fetch user data from an external API and save it to our database. Sounds easy, right? The code looked something like this: for user in users: external_data = fetch_from_api(user.id) save_to_db(external_data)…
Four hours. I wasted four hours chasing a bug that turned out to be a single missing character. Here’s what happened and why I’ll never make this mistake again. The Scenario I was working on a Node.js API that handled user authentication. Everything worked fine locally. But in production, certain login requests would just hang….
The Most Embarrassing Bug I Ever Shipped Four hours. I spent four hours staring at logs, checking git diffs, rolling back deployments, and questioning my entire career — all because of a typo. What Happened We had a payment webhook that was supposed to update user subscriptions. Everything worked fine in staging. But in production,…
Three hours. That’s how long I stared at my screen, questioning my career choices, doubting everything I knew about programming. And the culprit? A single character typo. The Setup I was building a simple API endpoint. Should’ve taken 20 minutes. But something wasn’t working. The response kept returning null instead of the expected data. I…
It was 2 AM when my phone rang. Not the kind of ring you ignore. The production database was frozen. Everything was frozen. And I was the on-call engineer. What Happened We had a simple migration running — adding a new column to a table with 2 million rows. Standard stuff. Or so I thought….
It was 2 AM when my phone buzzed. Our monitoring system was screaming — response times had spiked to 30+ seconds. Users were complaining on Twitter. And I had absolutely no idea what was happening. The Night Everything Slowed Down I pulled up my laptop, logged into the server, and my heart sank. The database…
It was 2 AM when my phone rang. Not the kind of call you want to get when you’re three drinks in at a friend’s birthday dinner. “The site is down,” our ops guy said. “Everything’s timing out.” What Was Happening I jumped on my laptop at the restaurant table while my friends looked at…