Ideas, Experiments, and Lessons Learned
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…
It was a regular Tuesday. I deployed a small change to our user API — just a minor refactor to clean up some duplicate code. Three hours later, my phone started buzzing. Customers were seeing wrong profile data. The Symptom Support tickets started flooding in: “Why is my email showing as someone else’s?” Users were…
Three days. That’s how long I stared at my screen, questioning my career choice, doubting everything I knew about coding. And the fix? One line. One stupid line that I missed a hundred times. The Problem Started Simple We had a bug in our payment system. Users were getting charged twice. Not always — just…
Three hours. That’s how long I stared at logs, checked configurations, and questioned my entire career before someone asked the obvious question: “Which server are you actually looking at?” I wasn’t working on anything fancy. Just a simple API endpoint that was returning 500 errors in production. Classic problem, right? Time to dig in. The…