Issue #2309575 follow-up by Wim Leers: [Revert] Remove the null and memory...

Issue #2309575 follow-up by Wim Leers: [Revert] Remove the null and memory backend definitions from core.services.yml in favour of devel module providing them instead.

core/core.services.yml

@@ -38,6 +38,10 @@ services:
     class: Drupal\Core\Cache\ApcuBackendFactory
   cache.backend.php:
     class: Drupal\Core\Cache\PhpBackendFactory
+  cache.backend.memory:
+    class: Drupal\Core\Cache\MemoryBackendFactory
+  cache.backend.null:
+    class: Drupal\Core\Cache\NullBackendFactory
   cache.bootstrap:
     class: Drupal\Core\Cache\CacheBackendInterface
     tags:

sites/example.settings.local.php

@@ -17,6 +17,9 @@
 $config['system.performance']['css']['preprocess'] = FALSE;
 $config['system.performance']['js']['preprocess'] = FALSE;
 
+// Disable the render cache, by using the Null cache back-end.
+$settings['cache']['bins']['render'] = 'cache.backend.null';
+
 /**
  * Enable access to rebuild.php.
  *