performance – Page 52 – Türker Yıldırım

Replacing 30 script tags with a Grunt build

Deep diveSeptember 25, 20149 min read

Thirty-one requests before the page could do anything, most of them under 2 KB. Concatenation in a declared order, source maps, and cache busting that proxies respect.

Convert a size string like 128M into bytes in PHP

SnippetSeptember 23, 20141 min read

The @ operator costs you even when nothing goes wrong

NoteSeptember 5, 20142 min read

The error suppression operator looks like a targeted silence — this one call, this one expected warning. It is neither targeted nor free. PHP implements it by saving…

worker_connections is not the number of visitors nginx can serve

NoteAugust 27, 20142 min read

worker_processes × worker_connections gets quoted as nginx’s capacity, and for a static file server it is roughly right. For anything proxying to PHP-FPM it is out by a…

Show how much memory Redis is using

SnippetJuly 28, 20141 min read

A namespaced call falls back to the global function, at a cost

NoteJuly 17, 20142 min read

Inside a namespace, an unqualified call to count() is not a call to count(). PHP looks for AppImportcount() first, fails to find it, and only then falls back…

fastcgi_buffers decide whether nginx writes the response to disk

NoteJune 10, 20142 min read

an upstream response is buffered to a temporary file is one of the lines people filter out of an nginx error log. It means every response over a…

Detect when the user has scrolled to the bottom of the page

SnippetMay 6, 20141 min read

Upgrading a PHP 5.3 application to 5.5

Deep diveApril 2, 201415 min read

5.3 stops getting security fixes in August. Deprecations first, then the behaviour changes, then the version bump — and an APC replacement that ignores every setting you tuned.

Limit the request rate for one URL in nginx

SnippetMarch 25, 20141 min read