It’s 3:14 AM. The PagerDuty alert has been screaming for twenty minutes, and I’ve just found the useMemo that killed our conversion rate. My eyes feel like they’ve been rubbed with sandpaper. The “War Room” smells of stale espresso and the collective failure of a team that thinks “react development” is just about stacking Lego … Read more
02:14 AM. The server room smells like ozone, burnt dust, and the collective failure of every “Senior Architect” who thought putting a legacy government database behind a single-factor VPN was a stroke of genius. The RAID array in Rack 4 is screaming—a literal, high-pitched mechanical wail that sounds like a dying banshee. It’s the sound … Read more
Audit Log – 03:42 AM. I’ve been staring at the dependency graph for six hours. It looks like a bowl of digital spaghetti, and I’m the one who has to eat it. $ du -sh node_modules 2.8G node_modules $ npm build > [email protected] build > vite build vite v4.3.9 building for production… transforming (2842) ../../node_modules/lodash/lodash.js … Read more
React Native: The High Cost of the “Free” Bridge I was sitting in a windowless “war room” in 2019, staring at a Grafana dashboard that looked like a heart attack. We were launching a real-time trading feature for a mid-sized fintech app. The JS thread was idling at 15%. The native UI thread was barely … Read more
AWS is Just Someone Else’s Data Center (With a Very Expensive API) I once spent thirty-six hours straight in a “War Room” because of a single checkbox in the AWS Console. We were migrating a high-throughput payment processing engine from a colo facility in Virginia to us-east-1. I was the lead SRE, and I thought … Read more
React Native: The High Cost of the “Free” Bridge It was 3:14 AM on a Tuesday in 2019. I was staring at a Grafana dashboard that looked like a heart attack. We had just pushed a “minor” update to our flagship fintech app—a React Native build that promised to unify our logic across iOS and … Read more
text <— TERMINAL SESSION: SSH ROOT@PROD-DB-NODE-04 —> [2024-05-22 03:14:02] node[41029]: (node:41029) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. [2024-05-22 03:14:05] FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed – JavaScript heap out of memory [2024-05-22 03:14:05] 1: 0xb7a910 node::Abort() [node] [2024-05-22 03:14:05] 2: 0xa8c30e [node] [2024-05-22 03:14:05] 3: 0xd4b520 v8::Utils::ReportOOMFailure(v8::internal::Isolate, … Read more
INCIDENT REPORT: #882-BRAVO-SIERRA STATUS: CRITICAL / SITE DOWN DATE: 2024-05-14 SYSTEM: Payment Processing Gateway (Node.js v20.11.0) ROOT CAUSE: Junior Developer “Chad” discovered async/await but didn’t understand the Event Loop. THE LOGS DON’T LIE I walked into the office at 3:00 AM because the pager went off. The production logs looked like a graveyard. Here is … Read more
Azure: The Enterprise Tax and the Art of Not Getting Paged at 3 AM I once cost a former employer $14,000 in a single weekend because I misunderstood how Azure Log Analytics ingestion pricing worked. I had just finished migrating a high-traffic NGINX ingress controller to a new AKS cluster in eastus2. I wanted “full … Read more
Kubernetes: The Distributed System You Probably Don’t Need (But Are Stuck With Anyway) It was 3:14 AM on a Tuesday in 2021. I was staring at a Grafana dashboard that looked like a heart monitor for someone having a massive coronary. We were running a fleet of microservices on Kubernetes v1.20 in us-east-1. I had … Read more