From 40a7440d6b7133edd4cf737e55f5e371af0b59a3 Mon Sep 17 00:00:00 2001
From: Alex Pott <alex.a.pott@googlemail.com>
Date: Tue, 25 Nov 2014 21:41:36 +0000
Subject: [PATCH] Issue #2352207 by martin107, Berdir: Database cache backend
 does not treat cid as case sensitive

---
 core/lib/Drupal/Core/Cache/CacheBackendInterface.php         | 2 ++
 core/lib/Drupal/Core/Cache/DatabaseBackend.php               | 1 +
 .../src/Tests/Cache/GenericCacheBackendUnitTestBase.php      | 5 +++++
 3 files changed, 8 insertions(+)

diff --git a/core/lib/Drupal/Core/Cache/CacheBackendInterface.php b/core/lib/Drupal/Core/Cache/CacheBackendInterface.php
index 753e6a3e27e..39c8c2624de 100644
--- a/core/lib/Drupal/Core/Cache/CacheBackendInterface.php
+++ b/core/lib/Drupal/Core/Cache/CacheBackendInterface.php
@@ -14,6 +14,8 @@ namespace Drupal\Core\Cache;
  * Drupal\Core\Cache\DatabaseBackend provides the default implementation, which
  * can be consulted as an example.
  *
+ * The cache indentifiers are case sensitive.
+ *
  * @ingroup cache
  */
 interface CacheBackendInterface {
diff --git a/core/lib/Drupal/Core/Cache/DatabaseBackend.php b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
index 1e249683306..813c00a1e69 100644
--- a/core/lib/Drupal/Core/Cache/DatabaseBackend.php
+++ b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
@@ -564,6 +564,7 @@ class DatabaseBackend implements CacheBackendInterface {
           'length' => 255,
           'not null' => TRUE,
           'default' => '',
+          'binary' => TRUE,
         ),
         'data' => array(
           'description' => 'A collection of data to cache.',
diff --git a/core/modules/system/src/Tests/Cache/GenericCacheBackendUnitTestBase.php b/core/modules/system/src/Tests/Cache/GenericCacheBackendUnitTestBase.php
index 958acff0a7e..91b75ba5c47 100644
--- a/core/modules/system/src/Tests/Cache/GenericCacheBackendUnitTestBase.php
+++ b/core/modules/system/src/Tests/Cache/GenericCacheBackendUnitTestBase.php
@@ -213,6 +213,11 @@ abstract class GenericCacheBackendUnitTestBase extends DrupalUnitTestBase {
     $backend->set($cid, 'test');
     $this->assertEqual('test', $backend->get($cid)->data);
 
+    // Check that the cache key is case sensitive.
+    $backend->set('TEST8', 'value');
+    $this->assertEqual('value', $backend->get('TEST8')->data);
+    $this->assertFalse($backend->get('test8'));
+
     // Calling ::set() with invalid cache tags.
     try {
       $backend->set('exception_test', 'value', Cache::PERMANENT, ['node' => [3, 5, 7]]);