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ANKUSH CHOUDHARY JOHALApr 28, 2026 • 14 min read
War Story: A Rust 1.94 Panic Caused Our API Gateway to Crash During Black Friday Traffic
At 14:02 UTC on Black Friday 2024, our production API gateway – responsible for routing 142,000...
#story#rust#panic#caused
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ANKUSH CHOUDHARY JOHALApr 27, 2026 • 13 min read
Postmortem: How a Git 2.44 Rebase Error Caused 2 Days of Lost Commits for Our 10-Person Team
On March 12, 2024, our 10-person full-stack team lost 47 hours of collective commit work when a...
#postmortem#rebase#errors#caused
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ANKUSH CHOUDHARY JOHALApr 29, 2026 • 11 min read
Postmortem: Credential Leak Caused by GitLab CI 17.0 and AWS Secrets Manager Misconfiguration
On June 18, 2024, a misconfigured GitLab CI 17.0 pipeline and AWS Secrets Manager access policy...
#postmortem#credential#leak#caused
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ANKUSH CHOUDHARY JOHALApr 30, 2026 • 14 min read
Postmortem: How a Manifest V3 Error Caused Our Chrome Extension to Be Removed from the Store for 1 Day
At 09:14 UTC on October 17, 2024, our team of 6 engineers watched 140,000 daily active users vanish....
#postmortem#manifest#errors#caused
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ANKUSH CHOUDHARY JOHALApr 30, 2026 • 16 min read
Postmortem: A Zigbee 3.0 Outage Caused My Smart Home Lights to Turn On at 3 AM for 1 Week
For 7 consecutive nights, every Zigbee 3.0-compatible smart light in my 4-bedroom home turned on at....
#postmortem#zigbee#outage#caused
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ANKUSH CHOUDHARY JOHALMay 1, 2026 • 3 min read
Postmortem: How a Bug in Unity 2026 Caused Motion Sickness for 20% of Our VR App Users
Postmortem: Unity 2026 Rendering Bug Caused Motion Sickness for 20% of VR App Users ...
#postmortem#unity3d#2026#caused
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ANKUSH CHOUDHARY JOHALApr 28, 2026 • 11 min read
War Story: A KEDA 2.16 Autoscaling Bug Caused Our Pods to Scale to 1000+ Unnecessarily – Here's the Fix
At 03:14 UTC on October 17, 2024, our production Kubernetes cluster in us-east-1a suddenly scaled 47...
#story#keda#autoscaling#caused
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ANKUSH CHOUDHARY JOHALApr 30, 2026 • 15 min read
Postmortem: A GPT-5 Hallucination Caused Invalid Payment Amounts in Stripe 2026 Integration
At 14:37 UTC on March 12, 2026, our payment pipeline processed 4,217 transactions with invalid...
#postmortem#gpt5#hallucination#caused
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ANKUSH CHOUDHARY JOHALMay 1, 2026 • 13 min read
Postmortem: How a LangChain 0.3 Hallucination Caused Our Recommendation Engine to Crash
At 14:17 UTC on October 12, 2024, our production recommendation engine serving 12.4 million daily...
#postmortem#langchain#hallucination#caused
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ANKUSH CHOUDHARY JOHALApr 28, 2026 • 13 min read
Postmortem: A Vite 6.0 HMR Bug Caused Our Development Environment to Crash 10+ Times per Day
For 14 consecutive days in Q3 2024, our 42-engineer frontend team lost an averageof 47 minutes per.....
#postmortem#vite#caused#development
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ANKUSH CHOUDHARY JOHALApr 28, 2026 • 20 min read
War Story: A Karpenter 1.1 Bug Caused Our EC2 Instances to Be Over-Provisioned by 40% – Here's the Fix
\n In Q3 2024, a silent bug in Karpenter 1.1's NodePool consolidation logic caused our production.....
#story#karpenter#caused#instances
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ANKUSH CHOUDHARY JOHALApr 29, 2026 • 14 min read
Postmortem: How a Dragonfly 0.20 OOM Caused a Caching Outage During Peak Traffic
At 18:42 UTC on Black Friday 2024, our 12-node Dragonfly 0.20 cluster serving 4.2M QPS hit a...
#postmortem#dragonfly#caused#caching
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ANKUSH CHOUDHARY JOHALApr 30, 2026 • 13 min read
Postmortem: How a Citus 11.0 Misconfiguration Caused Data Inconsistency Across Shards
At 14:37 UTC on October 17, 2023, a single misconfiguration in Citus 11.0’s shard mapping logic...
#postmortem#citus#misconfiguration#caused
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ANKUSH CHOUDHARY JOHALMay 1, 2026 • 17 min read
Postmortem: How a Lattice 2.9 Bug Caused Our Promotion Cycle to Be Delayed by 2 Weeks
On October 12, 2024, a silent regression in Lattice 2.9’s role-based access control (RBAC) module...
#postmortem#lattice#caused#promotion
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ANKUSH CHOUDHARY JOHALMay 1, 2026 • 17 min read
War Story: How a PostgreSQL 17 Deadlock Caused 30 Minutes of Downtime for Our E-Commerce Checkout Flow
At 14:17 UTC on October 12, 2024, our e-commerce checkout flow ground to a halt for 30 minutes,...
#story#postgres#deadlock#caused
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ANKUSH CHOUDHARY JOHALMay 1, 2026 • 15 min read
Postmortem: GraphQL 16 N+1 Problem Caused 3-Second Page Loads for 1 Hour
At 14:17 UTC on March 12, 2024, our production dashboard alerted on a p99 page load time of 3.2...
#postmortem#graphql#problem#caused
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ANKUSH CHOUDHARY JOHAL6d ago • 5 min read
Postmortem: A Redis 8.0 OOM Error Caused Our E-Commerce Site to Crash on Black Friday
Postmortem: A Redis 8.0 OOM Error Caused Our E-Commerce Site to Crash on Black...
#postmortem#redis#errors#caused
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ANKUSH CHOUDHARY JOHALApr 28, 2026 • 14 min read
Postmortem: How a Svelte 5 Reactivity Bug Caused Our Dashboard to Show Incorrect Data for 3 Hours
At 09:17 UTC on October 12, 2024, our Svelte 5-powered financial dashboard began serving 14% inflate...
#postmortem#svelte#reactivity#caused
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ANKUSH CHOUDHARY JOHALApr 27, 2026 • 16 min read
Postmortem: How a GPT-4o Hallucination Caused Incorrect Billing Calculations for 1k Enterprise Customers
On March 12, 2024, a silent failure in our LLM-integrated billing pipeline caused incorrect usage...
#postmortem#gpt4o#hallucination#caused
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ANKUSH CHOUDHARY JOHALApr 28, 2026 • 12 min read
Postmortem: Rust 1.85 Panic Caused a Crash in Our Embedded Device Fleet
On March 12, 2024, 14,200 industrial IoT gateways running a Rust 1.85-compiled firmware image began....
#postmortem#rust#panic#caused
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ANKUSH CHOUDHARY JOHALApr 30, 2026 • 17 min read
Postmortem: How a RTO Mandate at Amazon Caused 20% of Engineers to Quit in 2026
In Q1 2026, Amazon’s abrupt return-to-office (RTO) mandate triggered the largest single-quarter...
#postmortem#mandate#amazon#caused
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ANKUSH CHOUDHARY JOHALMay 1, 2026 • 17 min read
Postmortem: How a Jira 11.0 Outage Caused 4 Hour Delay for Our 1000+ Ticket Sprint
On October 12, 2024, Atlassian’s Jira 11.0 GA release triggered a cascading failure that left 1,247....
#postmortem#jira#outage#caused
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