Long Polling Explained: Build Real-Time Apps Without WebSockets
The battle-tested technique that powers notifications when persistent connections fail
Search across 203 posts, 22 explainers, and 78 topics
How Stock Brokers Push 1 Million Price Updates Per Second to Your Screen
The engineering behind real-time stock prices that move faster than you can blink
HOCON vs YAML vs TOML vs JSON: Complete Configuration Format Comparison
Why Docker uses YAML, Rust picks TOML, and Akka chose HOCON over JSON
Cloudflare Global Outage: How a Database Permission Change Broke the Internet
A 6-hour disruption took down ChatGPT, X, Spotify, Dropbox, and millions of sites worldwide - here's the technical breakdown and lessons for developers
Heartbeat: How Distributed Systems Know You're Still Alive
The simple signal that prevents your servers from becoming digital zombies
Your JSON is Costing You Thousands: Why TOON Might Save Your Budget
How a simple format change can reduce LLM API costs by 40-50%
Stop Blocking Your Paying Customers: Build a Smart Rate Limiter
How to protect your API without blocking legitimate users
Visitor Design Pattern
Separate algorithms from the objects they operate on
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
What Actually Happens When You Type a URL
From browser to backend server - the complete journey of a DNS request, with performance tricks and production insights
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
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