Visitor Design Pattern
Separate algorithms from the objects they operate on
Search across 252 posts, 23 explainers, and 84 topics
How Shopify Powers 5 Million Stores Without Breaking a Sweat
Inside the architecture that handles Black Friday at massive scale
WebTransport: The Protocol That Fixes What's Broken in WebSockets
How HTTP/3 and QUIC are changing real-time communication on the web
How DNS Works: The Complete Guide for Developers
DNS resolution, caching layers, record types, performance optimization, and debugging tools every developer should know
AWS US-East-1 Outage: How a Network Load Balancer Bug Took Down Half the Internet
A 12-hour disruption in AWS's largest region affected Netflix, Snapchat, Robinhood, and millions of users worldwide - here's what went wrong and what developers can learn
Interpreter Design Pattern
Build grammars and interpret expressions for custom languages
Postgres 18: The Release That Makes Databases Fast Again
Async I/O that's 3x faster, skip scans that actually work, and OAuth built-in - here's what this release means for your production systems
Java 25 is Finally Here: The LTS Release That Changes Everything
Simplified syntax, faster performance, and memory savings - here's what 3 years of Java evolution brings to your codebase
How Ticket Booking Systems Handle 50,000 People Fighting for One Seat
Inside the architecture that powers BookMyShow, Ticketmaster, and what happened during the Taylor Swift meltdown
Hash Collisions: The Hidden Performance Killer in Your Code
Why your O(1) lookup just became O(n), and what you can do about it
Memento Design Pattern
Save snapshots for undo, checkpoints, and rollback
Why JWT Replaced Sessions: Building Auth That Scales
How stateless tokens solved the scaling problem that broke every session-based system
How Kafka Works: The Engine Behind Real-Time Data Pipelines
Inside LinkedIn's log that changed how we think about messaging systems
Kubernetes Architecture: The Operating System for the Cloud
How Google's container orchestrator became the backbone of modern software deployment
