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
Search across 140 posts, 19 explainers, and 59 topics
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
How Meta Achieves 99.99999999% Cache Consistency
Inside the architecture that keeps 3 billion users in sync
Flyweight Design Pattern
Reduce memory by sharing common data between similar objects
How Slack Built a System That Handles 10+ Billion Messages
Inside the architecture that powers real-time communication for millions
Paxos: The Democracy of Distributed Systems
How a simple voting algorithm keeps distributed systems in agreement
Write-Ahead Log: The Golden Rule of Durable Systems
How a simple log file prevents your data from disappearing into the void
Prototype Design Pattern
Copy existing objects without depending on their classes
Distributed Counter System Design
From simple incrementers to battle-tested architectures that handle millions of operations
How Stripe Prevents Double Payments
Learn the engineering patterns that prevent duplicate charges and how to implement them in your payment systems
