Speculation Rules make multi-page sites feel instant
A block of JSON tells the browser which links to prerender. On a server-rendered site it closes most of the perceived gap with a single-page app.
Tagged
Performance
The N+1 you cannot see
Everyone knows to eager load. The queries that actually take sites down are the ones hiding in an accessor, a Blade partial, or a policy — and there is a one-line switch that finds all of them.
Database indexes, explained with a phone book
Most slow queries are one index away from being fast. The reason people do not add it is that nobody ever explained what the index is actually doing.
Running a model in the browser, and when that is a good idea
Transformers.js and WebGPU put real models on the client. The demo is easy; knowing which features belong there is the part worth thinking about.
Web performance is a budget, not a sprint
Every performance sprint I have been on made the site fast for about four months. The teams whose sites stayed fast did something different, and it was not technical.
WP_Query is fast until it is not
WordPress will happily let you write a query that scans a million meta rows. Here is which arguments are expensive, why, and what to do instead.