Replacing a direct call with an event feels like removing coupling. The dependency does not disappear — it moves from a line you can read into a subscriber…
will-change tells the browser to promote an element to its own compositor layer before the animation starts, which removes the stutter on the first frame. The advice usually…
A hundred Redis commands issued one at a time cost a hundred network round trips. On the same host that is around a millisecond total; across an availability…
Coverage records every line executed during a test, not every line the test was checking. A unit test for an invoice calculator that happens to construct three collaborators…
A week-old server already sees thousands of login attempts a day. Key-only SSH, a firewall, fail2ban and monit — and the recovery plan for locking yourself out.
Running a REPLACE() over the database to change a domain looks like it works, until a widget disappears or a theme setting resets. PHP serialised strings encode their…
The class name suggests it handles responsive images. What it actually does is three declarations, and none of them affects which file gets downloaded — a 2400px photo…
Building a string out of several variables in JavaScript has meant a chain of + and a careful audit of the spaces. Backtick strings interpolate directly and, more…
PSR-4 autoloading is triggered by a class name PHP cannot resolve. Functions and constants have no such hook, so a helpers file has to be loaded eagerly —…
Registering a custom post type does not create its rewrite rules, so the archive 404s until permalinks are re-saved. The fix that circulates is flush_rewrite_rules() on init, which…