All episodes
How One Engineer Automated Dependency Updates Without Breaking the Build
How One Team Reduced a 40 Percent Defect Rate Through Targeted Refactoring
How Chaos Engineering Prevented a Black Friday Meltdown
Using Structured Logging to Slash Debug Time by Hours
How One Engineer Used Feature Flags to Migrate a Core Service Without Downtime
How Stripe Masters API Versioning Without Breaking Clients
How One Engineer Reduced a Pipeline from 6 Hours to 4 Minutes with Delta Lake
How One Engineer Reduced a Docker Image from 2GB to 55MB
How to Debug Slow Queries with Flame Graphs
How an Off-by-One Error Caused a Silent Data Corruption Bug
How One Engineer Shrunk an AWS Bill by 40 Percent Using Spot Instances
How One Engineer Optimized an API with Connection Pooling
How One Team Fixed a GDPR Data Deletion That Took 72 Hours
How One Engineer Fixed a Quorum Read Slowdown in CockroachDB
How One Hotfix Caused a Production Outage and What We Learned
How One Engineer Migrated 10 Million Database Records Without Downtime
How One Engineer Cut Storage Costs by 60 Percent Using Tiered Compression
How One Engineer Fixed a Cascading Cache Stampede
How One Engineer Migrated 50 Million Users Without Downtime
How One Engineer Reduced a 12-Hour Batch Job to 15 Minutes with Streaming
How One Engineer Eliminated Flaky Tests Without Code Changes
How One Engineer Visualised Dependency Graphs to Fix Inefficient Microservices
How One Engineer Debugged a Race Condition That Only Happened at 3 AM
How One Engineer Debugged a Heisenbug That Only Reproduces in Production
How One Engineer Parallelized a Batch Job from 4 Hours to 3 Minutes
How One Engineer Reduced Kubernetes Costs by 70 Percent
How One Engineer Used Session Replay to Fix a Checkout Bug
How a Single Mistyped Environment Variable Broke a Deployment Pipeline
How One Engineer Cut CI Build Times by 80 Percent
How One Engineer Eliminated a Memory Leak in Production
How One Engineer Refactored a Monolith Without Stopping the Business
How a Single CDN Misconfiguration Took Down 15000 Sites
How One Engineer Reduced Database Deadlocks by 95 Percent
How One Engineer Automated Code Review with AI Agents
How One Engineer Used Structured Logging to Debug a Serverless Disaster
How One Engineer Isolates Microservice Failures with Circuit Breakers
How a Single Database Connection Pool Caused a Production Meltdown
How a Single Unicode Character Crashed a Payment Gateway
How a Single Misconfigured DNS Entry Caused a Multi-Region Outage
How One Engineer Cut Database Query Time 90 Percent With Indexes
How One Engineer Reduced Lambda Cold Starts by 60 Percent
How TypeScript Type Errors Caused a Three Hour Production Outage
How a Single Misconfigured Load Balancer Took Down a Billion Dollar Site
How a Single Null Byte Broke a Payment System
How a Single Feature Flag Caused a Cascading Production Failure
How a Single Race Condition Cost an E-Commerce Company Millions
How a Single Config Change Halved Server Costs
How a Single Regex Caused a Production Meltdown
How One Engineer Debogused a Kubernetes Outage Caused by a Single Misconfigured Pod
How One Engineer Reduced AWS Costs by 80 Percent With Reserved Instances
How One Engineer Cut CI Build Times by 80 Percent With Cache Warmers
How One Engineer Debugged a Production Outage Using Flame Graphs
How One Engineer Debugged a Race Condition in a Redis Lock
How a Single Log Line Saved a Startup from a Data Breach
How One Engineer Recalled a Wrong Production Deploy in 8 Seconds
How an Engineer Reduced Docker Image Size by 95 Percent
How One Engineer Cut Logging Costs 90 Percent Without Losing Observability
How One Engineer Repaired a Corrupt Git Repository Without Losing History
How One Engineer Debugged a Kubernetes Pod Eviction That Wiped 5000 Jobs
How One Engineer Fixed a Sidekiq Memory Bloat That Crunched Servers Every 72 Hours
How One Engineer Handled a Database Migration With Zero Downtime Using Flyway
How One Engineer Rewrote a Legacy Database Without Downtime
How One Engineer Debugged a Floating Point Bug That Cost a Drone Company $2 Million
How a Single Index Cut Query Time from Minutes to Milliseconds
How One Engineer Debugged a Memory Leak That Crashed Production Every 47 Days
How One Engineer Optimised an API with Branch Prediction
How One Engineer Fixed a Cache Poisoning Nightmare
How One Engineer Turned a Monolith Into Microservices Without Downtime
How One Engineer Automated 90 Percent of Code Reviews with a Custom Linter
How One Engineer Debugged a Null Pointer in Production
How a Single Linter Rule Prevented a Data Corruption Bug
How One Engineer Debugged a Race Condition in a Distributed Database
How One Engineer Wrote a Single Git Hook That Saved 200 Hours a Week
How One Engineer Cut Latency 40 Percent with Tailwind CSS Purge
How One Engineer Cut CI Costs 80 Percent with Smart Caching
How One Engineer Saved a Project from Vendor Lock-In with OpenTelemetry
How One Engineer Debugged a Timezone Bug That Cost a Trading Desk Millions
How One Engineer Fixed a Serverless Cold Start Nightmare
How One Engineer Shrank a Docker Image by 95 Percent
How One Engineer Debugged a Year 2038 Bug in 2025
The $400k Bug That Only Happened in Production
How a Single Config Change Reduced AWS Costs by 90 Percent
How One Engineer Reduced Cloud Costs by 60 Percent with Spot Instances
How One Engineer Debugged a Heisenbug That Only Happened in Production
How One Engineer Fixed a Timezone Bug That Lost Millions
How One Engineer Eliminated Configuration Drift with a Single Declarative Tool
How One Engineer Cut a 12-Hour Deploy to 11 Minutes with Sandboxed Previews
How One Engineer Cut Database Latency by 99 Percent with Connection Pooling
How a Single Memory Leak Crashed a Trading Platform
How a Single Query Lock Brought Down Production at 3 AM
How One Engineer Reduced Queue Latency by 80 Percent with Batching
How One Engineer Reduced Memory Use by 70 Percent with Arena Allocation
How One Engineer Used Genetic Algorithms to Optimize API Routing
How One Engineer Cut Test Suite Runtime by 80 Percent with Property Based Testing
How One Engineer Reduced Incident Response with a Custom Chaos Engineering Tool
How One Engineer Transformed a Legacy Monolith into Microservices Without Downtime
How One Engineer Reduced a Monorepo CI Pipeline to 8 Minutes
How a Single Feature Flag Prevented a Five-Hour Outage
How One Engineer Automated Code Review with a Custom Static Analysis Tool
How One Engineer Cut Incident Response from Hours to Seconds with a Runbook