PHP Realpath Cache

PHP has a feature to cache the realpath resolutions to speed up frequent accesses to the filesystem.

realpath_cache_size = 512K
realpath_cache_ttl = 86400

Check current realpath cache size using

var_dump(realpath_cache_size());

Reference

• https://haydenjames.io/set-monitor-phps-realpath_cache_size-correctly/
• https://tideways.com/profiler/blog/how-does-the-php-realpath-cache-work-and-how-to-configure-it