#performance

1 posts
Development

O(n²) Worked on Your Laptop. Then Real Users Showed Up.

You wrote a function that worked perfectly on your laptop. It flew through a list of 50 names, sorted them, found the duplicates, and returned an answer in a blink. Then you shipped it, real users sho...

2026.08.14 · 15 min read · views 488
O(n²) Worked on Your Laptop. Then Real Users Showed Up.