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Date: Fri, 19 Jun 2015 14:43:09 +0200
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Subject: PHP-FPM: How to clear the realpath cache on deployment?
From: sebastian@php.net (Sebastian Bergmann)

 Scenario: nginx + PHP-FPM / FastCGI.

 The final step of the deployment is updating a symlink to point to the
 new version.

 For N <= realpath_cache_ttl seconds after the deployment, some
 filesystem operations fail because of outdated realpath cache entries.

 Is there a way to signal the PHP-FPM / FastCGI processes to clear
 the realpath cache? If not, I think this should be added :-)

 Thanks!
Sebastian