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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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32
tests/phpunit/tests/cache.php
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@@ -415,4 +415,36 @@ class Tests_Cache extends WP_UnitTestCase {
$this->assertSame( $expected, $found );
}
/**
* @ticket 4476
* @ticket 9773
*
* test wp_cache_flush_group
*
* @covers ::wp_cache_flush_group
*/
public function test_wp_cache_flush_group() {
$key = 'my-key';
$val = 'my-val';
wp_cache_set( $key, $val, 'group-test' );
wp_cache_set( $key, $val, 'group-kept' );
$this->assertSame( $val, wp_cache_get( $key, 'group-test' ), 'test_wp_cache_flush_group: group-test should contain my-val' );
if ( wp_using_ext_object_cache() ) {
$this->setExpectedIncorrectUsage( 'wp_cache_flush_group' );
}
$results = wp_cache_flush_group( 'group-test' );
if ( wp_using_ext_object_cache() ) {
$this->assertFalse( $results );
} else {
$this->assertTrue( $results );
$this->assertFalse( wp_cache_get( $key, 'group-test' ), 'test_wp_cache_flush_group: group-test should return false' );
$this->assertSame( $val, wp_cache_get( $key, 'group-kept' ), 'test_wp_cache_flush_group: group-kept should still contain my-val' );
}
}
}