Testing setup steps Install tool_mfa: git clone https://github.com/catalyst/moodle-tool_mfa/ admin/tool/tool_mfa Install tool_forcedcache: git clone https://github.com/catalyst/moodle-tool_forcedcache admin/tool/forcedcache Configure tool_forcedcache by addign the following to your config.php BEFORE the require_once(_ DIR _ . '/lib/setup.php'); line: // config.php if (file_exists(__DIR__.'/admin/tool/forcedcache/version.php')) { $CFG->alternative_cache_factory_class = 'tool_forcedcache_cache_factory'; } $CFG->tool_forcedcache_config_array = [ 'stores' => [ 'local_file' => [ 'type' => 'file', 'config' => [ 'path' => '/tmp/local-cache-file', 'autocreate' => 1, ], ], ], 'rules' => [ 'application' => [ [ 'stores' => ['local_file'], ], ], 'session' => [], 'request' => [] ] ]; Apply the following patch in core to the constructor of cache/stores/file/lib.php (around _line 166) to simulate 20 different front ends each with their own local file cache. // Inside of cache/stores/file/lib.php // Put the extra block inside the __construct method near the start // In my case, I have it immediately after $this->name = $name (9 lines into the function)   if ($name == 'local_file') { $configuration['path'] .= '/' . rand(10,20); } Testing steps Throughout the following tests, any issues loading the expected content when navigating around should be considered a test failure, and might indicate a stagnant or incorrect cache item Plugin Install works Install a plugin with a callback / hook, such as tool_mfa. Go to Site administration Click on each of the tabs at the top, and then reload the page For each click + reload: Confirm that the correct tab content was loaded Plugin Uninstall works Remove the tool_mfa plugin that was previously installed, then similar to previously Go to Site administration Click on each of the tabs at the top, and then reload the page For each click + reload: Confirm that the correct tab content was loaded Plugin Reinstall works Reinstall the tool_mfa plugin that was previously installed, then similar to previously Go to Site administration Click on each of the tabs at the top, and then reload the page For each click + reload: Confirm that the correct tab content was loaded