Index: tests/t3lib/cache/t3lib_cache_factoryTest.php
===================================================================
--- tests/t3lib/cache/t3lib_cache_factoryTest.php	(revision 8713)
+++ tests/t3lib/cache/t3lib_cache_factoryTest.php	(working copy)
@@ -22,6 +22,8 @@
 *  This copyright notice MUST APPEAR in all copies of the script!
 ***************************************************************/
 
+require_once 'backend/class.t3lib_cache_backend_mockbackend.php';
+
 /**
  * Testcase for the Cache Factory
  *
@@ -41,7 +43,7 @@
 	 * @author Ingo Renner <ingo@typo3.org>
 	 */
 	public function setUp() {
-		$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheBackends']['t3lib_cache_backend_MockBackend'] = 'tests/t3lib/cache/backend/class.t3lib_cache_backend_mockbackend.php:t3lib_cache_backend_MockBackend';
+		$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheBackends']['t3lib_cache_backend_MockBackend'] = 't3lib_cache_backend_MockBackend';
 	}
 
 	/**
Index: t3lib/config_default.php
===================================================================
--- t3lib/config_default.php	(revision 8713)
+++ t3lib/config_default.php	(working copy)
@@ -108,19 +108,19 @@
 		'reverseProxyPrefixSSL' => '',				// String: prefix to be added to the internal URL (SCRIPT_NAME and REQUEST_URI) when accessing the server via an SSL proxy. This setting overrides <a href="#SYS-reverseProxyPrefix">[SYS][reverseProxyPrefix]</a>.
 		'caching' => array(
 			'cacheFrontends' => array(
-				't3lib_cache_frontend_VariableFrontend' => 't3lib/cache/frontend/class.t3lib_cache_frontend_variablefrontend.php:t3lib_cache_frontend_VariableFrontend',
-				't3lib_cache_frontend_StringFrontend'   => 't3lib/cache/frontend/class.t3lib_cache_frontend_stringfrontend.php:t3lib_cache_frontend_StringFrontend',
-				't3lib_cache_frontend_PhpFrontend'      => 't3lib/cache/frontend/class.t3lib_cache_frontend_phpfrontend.php:t3lib_cache_frontend_PhpFrontend',
+				't3lib_cache_frontend_VariableFrontend' => 't3lib_cache_frontend_VariableFrontend',
+				't3lib_cache_frontend_StringFrontend'   => 't3lib_cache_frontend_StringFrontend',
+				't3lib_cache_frontend_PhpFrontend'      => 't3lib_cache_frontend_PhpFrontend',
 			),
 			'cacheBackends' => array(
-				't3lib_cache_backend_DbBackend'              => 't3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php:t3lib_cache_backend_DbBackend',
-				't3lib_cache_backend_FileBackend'            => 't3lib/cache/backend/class.t3lib_cache_backend_filebackend.php:t3lib_cache_backend_FileBackend',
-				't3lib_cache_backend_GlobalsBackend'         => 't3lib/cache/backend/class.t3lib_cache_backend_globalsbackend.php:t3lib_cache_backend_GlobalsBackend',
-				't3lib_cache_backend_MemcachedBackend'       => 't3lib/cache/backend/class.t3lib_cache_backend_memcachedbackend.php:t3lib_cache_backend_MemcachedBackend',
-				't3lib_cache_backend_PdoBackend'             => 't3lib/cache/backend/class.t3lib_cache_backend_pdobackend.php:t3lib_cache_backend_PdoBackend',
-				't3lib_cache_backend_ApcBackend'             => 't3lib/cache/backend/class.t3lib_cache_backend_apcbackend.php:t3lib_cache_backend_ApcBackend',
-				't3lib_cache_backend_NullBackend'            => 't3lib/cache/backend/class.t3lib_cache_backend_nullbackend.php:t3lib_cache_backend_NullBackend',
-				't3lib_cache_backend_TransientMemoryBackend' => 't3lib/cache/backend/class.t3lib_cache_backend_transientmemorybackend.php:t3lib_cache_backend_TransientMemoryBackend',
+				't3lib_cache_backend_DbBackend'              => 't3lib_cache_backend_DbBackend',
+				't3lib_cache_backend_FileBackend'            => 't3lib_cache_backend_FileBackend',
+				't3lib_cache_backend_GlobalsBackend'         => 't3lib_cache_backend_GlobalsBackend',
+				't3lib_cache_backend_MemcachedBackend'       => 't3lib_cache_backend_MemcachedBackend',
+				't3lib_cache_backend_PdoBackend'             => 't3lib_cache_backend_PdoBackend',
+				't3lib_cache_backend_ApcBackend'             => 't3lib_cache_backend_ApcBackend',
+				't3lib_cache_backend_NullBackend'            => 't3lib_cache_backend_NullBackend',
+				't3lib_cache_backend_TransientMemoryBackend' => 't3lib_cache_backend_TransientMemoryBackend',
 			),
 			'cacheConfigurations' => array(
 				'cache_hash' => array(
Index: t3lib/cache/class.t3lib_cache_factory.php
===================================================================
--- t3lib/cache/class.t3lib_cache_factory.php	(revision 8713)
+++ t3lib/cache/class.t3lib_cache_factory.php	(working copy)
@@ -71,15 +71,22 @@
 	 */
 	public function create($cacheIdentifier, $cacheName, $backendName, array $backendOptions = array()) {
 
-			// loading the cache backend file and class
-		list($backendFile, $backendClassReference) = explode(
-			':',
-			$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheBackends'][$backendName]
-		);
+		$backendReference = $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheBackends'][$backendName];
+
+		if (strpos($backendReference, ':') === FALSE) {
+			$backendClassReference = $backendReference;
+		} else {
+			t3lib_div::deprecationLog("Configuring cacheBackend with filename is deprecated since TYPO3 4.5. Use the autoloader instead.");
+				// loading the cache backend file and class
+			list($backendFile, $backendClassReference) = explode(
+				':',
+				$backendReference
+			);
 
-		$backendRequireFile = t3lib_div::getFileAbsFileName($backendFile);
-		if ($backendRequireFile) {
-			t3lib_div::requireOnce($backendRequireFile);
+			$backendRequireFile = t3lib_div::getFileAbsFileName($backendFile);
+			if ($backendRequireFile) {
+				t3lib_div::requireOnce($backendRequireFile);
+			}
 		}
 
 		$backend = t3lib_div::makeInstance($backendClassReference, $backendOptions);
@@ -91,17 +98,23 @@
 			);
 		}
 
-			// loading the cache frontend file and class
-		list($cacheFile, $cacheClassReference) = explode(
-			':',
-			$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheFrontends'][$cacheName]
-		);
+		$cacheReference = $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheFrontends'][$cacheName];
 
-		$cacheRequireFile = t3lib_div::getFileAbsFileName($cacheFile);
-		if ($cacheRequireFile) {
-			t3lib_div::requireOnce($cacheRequireFile);
-		}
+		if (strpos($cacheReference, ':') === FALSE) {
+			$cacheClassReference = $cacheReference;
+		} else {
+			t3lib_div::deprecationLog("Configuring cacheFrontends with filename is deprecated since TYPO3 4.5. Use the autoloader instead.");
+				// loading the cache frontend file and class
+			list($cacheFile, $cacheClassReference) = explode(
+				':',
+				$cacheReference
+			);
 
+			$cacheRequireFile = t3lib_div::getFileAbsFileName($cacheFile);
+			if ($cacheRequireFile) {
+				t3lib_div::requireOnce($cacheRequireFile);
+			}
+		}
 		$cache = t3lib_div::makeInstance($cacheClassReference, $cacheIdentifier, $backend);