How and why the leap second affected Cloudflare DNS

At midnight UTC on New Year’s Day, deep inside Cloudflare’s custom RRDNS software, a number went negative when it should always have been, at worst, zero. A little later this negative value caused RRDNS to panic. This panic was caught using the recover feature of the Go language. Read more @ Cloudflare Blog

Defensive Programming in PHP (EN)

Jeff explains Defensive Programming - an approach to programming that aims to predict and intercept problems before they exist by following good practices Fonte: Defensive Programming in PHP