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Cache API: Add wp_cache_flush_group function.

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Add a new plugable function called `wp_cache_flush_group`, that will allow developers to clear whole cache groups with a single call. Developers can detect if their current implementation of an object cache supports flushing by group, by calling `wp_cache_supports_group_flush` which returns true if it is supported. If the developers of the object cache drop-in has not implemented `wp_cache_flush_group` and `wp_cache_supports_group_flush`, these functions are polyfilled and `wp_cache_supports_group_flush` defaults to false.

Props Spacedmonkey, filosofo, ryan, sc0ttkclark, SergeyBiryukov, scribu, Ste_95, dd32, dhilditch, dougal, lucasbustamante, dg12345, tillkruess, peterwilsoncc, flixos90, pbearne.
Fixes #4476.

git-svn-id: https://develop.svn.wordpress.org/trunk@53763 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Jonny Harris
2022-07-22 20:50:31 +00:00
parent bd151a9048
commit 40768e4ebe
6 changed files with 137 additions and 0 deletions
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11
tests/phpunit/includes/object-cache.php
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@@ -745,6 +745,17 @@ function wp_cache_init() {
$wp_object_cache = new WP_Object_Cache();
}
/**
* Whether the object cache implementation supports flushing individual cache groups.
*
* @since 6.1.0
*
* @return bool True if group flushing is supported, false otherwise.
*/
function wp_cache_supports_group_flush() {
return false;
}
/**
* Adds a group or set of groups to the list of non-persistent groups.
*