latency

2 articles · newest first

Realistic painterly illustration of a lone courier racing along a very long winding road at dusk, a distant city glowing far ahead

What is latency? Why your app feels slow for some people

Lesson 2 of when it breaks: why a vibe-coded app feels instant for you and sluggish for someone across the world. What latency is, what causes it, and the one thing that fixes most of it.

Sam Ortega · 1h ago · 4 min

Painterly night-time world map seen from above, with glowing golden server nodes on several continents connected by arcs of light, some short and some stretching across the globe

Build

What is an edge / CDN? Keeping your site close to your users

Lesson 6 of making it real: the speed trick your vibe-coded app already gets for free. Distance costs time, so a CDN keeps copies of your site on servers near your users — and here's exactly where that stops.

Sam Ortega · 2h ago · 4 min