L-electron-Rare/moodle
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

MDL-45584 cache: Make identifiers part of the cache creation.

Browse Source 
It is now safe to cache a reference to a cache and expect consistent results.

Changing identifiers altered cache results where a reference was
held to the cache. Identifiers have been set to be cached with
identifiers included so the caches are separate.

As a consequence of this it was identified that invalidation events
and identifiers don't easily work together as an event can't determine
which identifiers should be used for cache invalidation.  So invalidation
events have been made incompatible with identifiers being set.  No core
code used this combination as it's not possible to understand any expected
behaviour.

Event invalidation for application and session caches was centralised to the same
location.  The only difference was the name of the lastinvalidation variable. This
improves support and consistency of invalidation code.
This commit is contained in:
Russell Smith
2017-03-02 11:06:17 +08:00
committed by Mark Nelson
parent 0f59b6dd75
commit f3789f2fb3
8 changed files with 131 additions and 127 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cache/tests/cache_test.php
Vendored
+14 -10
View File
@@ -188,7 +188,9 @@ class core_cache_testcase extends advanced_testcase {
}
/**
* Tests set_identifiers resets identifiers and static cache
* Tests set_identifiers fails post cache creation.
*
* set_identifiers cannot be called after initial cache instantiation, as you need to create a difference cache.
*/
public function test_set_identifiers() {
$instance = cache_config_testing::instance();
@@ -204,16 +206,8 @@ class core_cache_testcase extends advanced_testcase {
$this->assertTrue($cache->set('contest', 'test data 1'));
$this->assertEquals('test data 1', $cache->get('contest'));
$this->expectException('coding_exception');
$cache->set_identifiers(array());
$this->assertFalse($cache->get('contest'));
$this->assertTrue($cache->set('contest', 'empty ident'));
$this->assertEquals('empty ident', $cache->get('contest'));
$cache->set_identifiers(array('area'));
$this->assertEquals('test data 1', $cache->get('contest'));
$cache->set_identifiers(array());
$this->assertEquals('empty ident', $cache->get('contest'));
}
/**
@@ -2022,6 +2016,16 @@ class core_cache_testcase extends advanced_testcase {
$this->assertEquals('b', $returnedinstance2->name);
}
public function test_identifiers_have_separate_caches() {
$cachepg = cache::make('core', 'databasemeta', array('dbfamily' => 'pgsql'));
$cachepg->set(1, 'here');
$cachemy = cache::make('core', 'databasemeta', array('dbfamily' => 'mysql'));
$cachemy->set(2, 'there');
$this->assertEquals('here', $cachepg->get(1));
$this->assertEquals('there', $cachemy->get(2));
$this->assertFalse($cachemy->get(1));
}
public function test_performance_debug() {
global $CFG;
$this->resetAfterTest(true);