Merge branch 'task/improve-cache-handling' into develop

Classes/Features/CacheInvalidation/Domain/Model/Task/FlushFrontendPageCacheTask.php

@@ -56,7 +56,22 @@ protected function executeTask(): bool
         $dataHandler = $this->getDataHandler();
         $commands = GeneralUtility::trimExplode(',', $this->configuration['pid'], true);
         foreach ($commands as $command) {
-            $dataHandler->clear_cacheCmd($command);
+            // This is the same method ultimately called as if we changed the
+            // DataBase via DataHandler. This means it is also the same logic
+            // used as the backend.
+            // This is @internal. However, it does more processing than
+            // any public api.
+            $dataHandler->registerRecordIdForPageCacheClearing(
+                'pages',
+                $command,
+            );
+        }
+
+        // We want to call $dataHandler->processClearCacheQueue().
+        // That function is protected, so we have to do it indirectly.
+        $dataHandler->process_cmdmap();
+
+        foreach ($commands as $command) {
             $this->addMessage('Cleared frontend cache with configuration clearCacheCmd=' . $command);
         }
         return true;