From 54541bd7cd42ea3f649fdea5365c1223cfc0b3b6 Mon Sep 17 00:00:00 2001
From: Jochen <jochen.roth@b13.com>
Date: Mon, 2 Jun 2025 16:45:38 +0200
Subject: [PATCH] [TASK] Catch error while flushing cache tags

When flushing the cache of a lot of tags
a user might reach the SQL query limit.

This error will now be caught and logged.
---
 Build/phpunit/FunctionalTestsBootstrap.php         | 1 +
 Build/phpunit/UnitTestsBootstrap.php               | 1 +
 Classes/Cache/Backend/ReverseProxyCacheBackend.php | 8 +++++++-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/Build/phpunit/FunctionalTestsBootstrap.php b/Build/phpunit/FunctionalTestsBootstrap.php
index 443197d..29a4cbb 100644
--- a/Build/phpunit/FunctionalTestsBootstrap.php
+++ b/Build/phpunit/FunctionalTestsBootstrap.php
@@ -1,4 +1,5 @@
 <?php
+
 /*
  * This file is part of the TYPO3 CMS project.
  *
diff --git a/Build/phpunit/UnitTestsBootstrap.php b/Build/phpunit/UnitTestsBootstrap.php
index 9e9222f..c0a77b9 100644
--- a/Build/phpunit/UnitTestsBootstrap.php
+++ b/Build/phpunit/UnitTestsBootstrap.php
@@ -1,4 +1,5 @@
 <?php
+
 /*
  * This file is part of the TYPO3 CMS project.
  *
diff --git a/Classes/Cache/Backend/ReverseProxyCacheBackend.php b/Classes/Cache/Backend/ReverseProxyCacheBackend.php
index 051b6f9..2683af0 100755
--- a/Classes/Cache/Backend/ReverseProxyCacheBackend.php
+++ b/Classes/Cache/Backend/ReverseProxyCacheBackend.php
@@ -18,6 +18,7 @@
  */
 
 use B13\Proxycachemanager\Provider\ProxyProviderInterface;
+use Psr\Log\LoggerAwareTrait;
 use TYPO3\CMS\Core\Cache\Backend\TransientBackendInterface;
 use TYPO3\CMS\Core\Cache\Backend\Typo3DatabaseBackend;
 use TYPO3\CMS\Core\Database\ConnectionPool;
@@ -30,6 +31,7 @@
  */
 class ReverseProxyCacheBackend extends Typo3DatabaseBackend implements TransientBackendInterface
 {
+    use LoggerAwareTrait;
     protected ProxyProviderInterface $reverseProxyProvider;
 
     public function setReverseProxyProvider(ProxyProviderInterface $reverseProxyProvider)
@@ -113,7 +115,11 @@ public function flushByTags(array $tags)
             $this->reverseProxyProvider->flushCacheForUrls($urls);
         }
 
-        parent::flushByTags($tags);
+        try {
+            parent::flushByTags($tags);
+        } catch (\Throwable $e) {
+            $this->logger->error('Failed to flush ' . count($tags) . ' tags. SQL query limit exceeded. See the list of all tags ' . implode(', ', $tags));
+        }
     }
 
     /**