PERFORMANCE

Idle until urgent

"A few weeks ago I was looking at some of the performance metrics for my site. Specifically, I wanted to see how I was doing on our newest metric, first input delay (FID). […]

To my surprise, my site’s FID was 254ms at the 99th percentile. And while that’s not terrible, the perfectionist in me just couldn’t let that slide. I had to fix it!"

INFOGRAPHIC

Maps explaining why the world's flight paths are a mess

If you think flying from A to B is a matter of plotting the most direct path between two places, think again.
Security and political issues determine flight paths, and ticket prices far more than considerations about an airline’s carbon footprint