diff --git a/bin/auth_ejabberd.php b/bin/auth_ejabberd.php
index 7682674d7c..003faae1f5 100755
--- a/bin/auth_ejabberd.php
+++ b/bin/auth_ejabberd.php
@@ -59,7 +59,8 @@ $configLoader = new Cache\ConfigCacheLoader($basedir);
 $configCache = Factory\ConfigFactory::createCache($configLoader);
 Factory\DBFactory::init($configCache, $_SERVER);
 $config = Factory\ConfigFactory::createConfig($configCache);
-$pconfig = Factory\ConfigFactory::createPConfig($configCache);
+// needed to call PConfig::init()
+Factory\ConfigFactory::createPConfig($configCache);
 $logger = Factory\LoggerFactory::create('auth_ejabberd', $config);
 $profiler = Factory\ProfilerFactory::create($logger, $config);
 
diff --git a/bin/console.php b/bin/console.php
index 9fee605b2f..2b0d588210 100755
--- a/bin/console.php
+++ b/bin/console.php
@@ -12,7 +12,8 @@ $configLoader = new Cache\ConfigCacheLoader($basedir);
 $configCache = Factory\ConfigFactory::createCache($configLoader);
 Factory\DBFactory::init($configCache, $_SERVER);
 $config = Factory\ConfigFactory::createConfig($configCache);
-$pconfig = Factory\ConfigFactory::createPConfig($configCache);
+// needed to call PConfig::init()
+Factory\ConfigFactory::createPConfig($configCache);
 $logger = Factory\LoggerFactory::create('console', $config);
 $profiler = Factory\ProfilerFactory::create($logger, $config);
 
diff --git a/bin/daemon.php b/bin/daemon.php
index 2b106b62d8..f2970a5180 100755
--- a/bin/daemon.php
+++ b/bin/daemon.php
@@ -39,7 +39,8 @@ $configLoader = new Cache\ConfigCacheLoader($basedir);
 $configCache = Factory\ConfigFactory::createCache($configLoader);
 Factory\DBFactory::init($configCache, $_SERVER);
 $config = Factory\ConfigFactory::createConfig($configCache);
-$pconfig = Factory\ConfigFactory::createPConfig($configCache);
+// needed to call PConfig::init()
+Factory\ConfigFactory::createPConfig($configCache);
 $logger = Factory\LoggerFactory::create('daemon', $config);
 $profiler = Factory\ProfilerFactory::create($logger, $config);
 
diff --git a/bin/worker.php b/bin/worker.php
index 0a9b4cb38b..5303331276 100755
--- a/bin/worker.php
+++ b/bin/worker.php
@@ -37,7 +37,8 @@ $configLoader = new Cache\ConfigCacheLoader($basedir);
 $configCache = Factory\ConfigFactory::createCache($configLoader);
 Factory\DBFactory::init($configCache, $_SERVER);
 $config = Factory\ConfigFactory::createConfig($configCache);
-$pconfig = Factory\ConfigFactory::createPConfig($configCache);
+// needed to call PConfig::init()
+Factory\ConfigFactory::createPConfig($configCache);
 $logger = Factory\LoggerFactory::create('worker', $config);
 $profiler = Factory\ProfilerFactory::create($logger, $config);
 
diff --git a/index.php b/index.php
index 9ef9490b37..66f0239654 100644
--- a/index.php
+++ b/index.php
@@ -20,7 +20,8 @@ $configLoader = new Cache\ConfigCacheLoader($basedir);
 $configCache = Factory\ConfigFactory::createCache($configLoader);
 Factory\DBFactory::init($configCache, $_SERVER);
 $config = Factory\ConfigFactory::createConfig($configCache);
-$pconfig = Factory\ConfigFactory::createPConfig($configCache);
+// needed to call PConfig::init()
+Factory\ConfigFactory::createPConfig($configCache);
 $logger = Factory\LoggerFactory::create('index', $config);
 $profiler = Factory\ProfilerFactory::create($logger, $config);
 
diff --git a/src/App.php b/src/App.php
index e715e6ced6..3189b2da7b 100644
--- a/src/App.php
+++ b/src/App.php
@@ -109,11 +109,6 @@ class App
 	 */
 	public $mobileDetect;
 
-	/**
-	 * @var LoggerInterface The current logger of this App
-	 */
-	private $logger;
-
 	/**
 	 * @var Configuration The config
 	 */
@@ -339,35 +334,13 @@ class App
 		return $this->mode;
 	}
 
-	/**
-	 * Returns the Logger of the Application
-	 *
-	 * @return LoggerInterface The Logger
-	 * @throws InternalServerErrorException when the logger isn't created
-	 */
-	public function getLogger()
-	{
-		if (empty($this->logger)) {
-			throw new InternalServerErrorException('Logger of the Application is not defined');
-		}
-
-		return $this->logger;
-	}
-
 	/**
 	 * Reloads the whole app instance
 	 */
 	public function reload()
 	{
-		$this->getMode()->determine($this->basePath);
-
 		$this->determineURLPath();
 
-		if ($this->getMode()->has(App\Mode::DBCONFIGAVAILABLE)) {
-			Core\Config::load();
-		}
-
-		// again because DB-config could change the config
 		$this->getMode()->determine($this->basePath);
 
 		if ($this->getMode()->has(App\Mode::DBAVAILABLE)) {
@@ -382,8 +355,6 @@ class App
 		Core\L10n::init();
 
 		$this->process_id = Core\System::processID('log');
-
-		Core\Logger::setLogger($this->logger);
 	}
 
 	/**
diff --git a/src/Core/Config.php b/src/Core/Config.php
index 405d14d126..4bf9c5b11d 100644
--- a/src/Core/Config.php
+++ b/src/Core/Config.php
@@ -8,10 +8,6 @@
  */
 namespace Friendica\Core;
 
-use Friendica\Core\Config\ConfigCache;
-use Friendica\Core\Config\IConfigAdapter;
-use Friendica\Core\Config\IConfigCache;
-
 /**
  * @brief Arbitrary system configuration storage
  *
diff --git a/src/Core/Config/Cache/ConfigCache.php b/src/Core/Config/Cache/ConfigCache.php
index b1172c0c82..54da327dba 100644
--- a/src/Core/Config/Cache/ConfigCache.php
+++ b/src/Core/Config/Cache/ConfigCache.php
@@ -55,6 +55,8 @@ class ConfigCache implements IConfigCache, IPConfigCache
 	{
 		if (isset($this->config[$cat][$key])) {
 			return $this->config[$cat][$key];
+		} elseif ($key == null && isset($this->config[$cat])) {
+			return $this->config[$cat];
 		} else {
 			return '!<unset>!';
 		}
@@ -65,8 +67,8 @@ class ConfigCache implements IConfigCache, IPConfigCache
 	 */
 	public function has($cat, $key = null)
 	{
-		return isset($this->config[$cat][$key])
-			&& $this->config[$cat][$key] !== '!<unset>!';
+		return (isset($this->config[$cat][$key]) && $this->config[$cat][$key] !== '!<unset>!') ||
+		($key == null && isset($this->config[$cat]) && $this->config[$cat] !== '!<unset>!' && is_array($this->config[$cat]));
 	}
 
 	/**
@@ -105,8 +107,8 @@ class ConfigCache implements IConfigCache, IPConfigCache
 	 */
 	public function hasP($uid, $cat, $key = null)
 	{
-		return isset($this->config[$uid][$cat][$key])
-			&& $this->config[$uid][$cat][$key] !== '!<unset>!';
+		return (isset($this->config[$uid][$cat][$key]) && $this->config[$uid][$cat][$key] !== '!<unset>!') ||
+			($key == null && isset($this->config[$uid][$cat]) && $this->config[$uid][$cat] !== '!<unset>!' && is_array($this->config[$uid][$cat]));
 	}
 
 	/**
@@ -144,6 +146,8 @@ class ConfigCache implements IConfigCache, IPConfigCache
 	{
 		if (isset($this->config[$uid][$cat][$key])) {
 			return $this->config[$uid][$cat][$key];
+		} elseif ($key == null && isset($this->config[$uid][$cat])) {
+			return $this->config[$uid][$cat];
 		} else {
 			return '!<unset>!';
 		}
diff --git a/src/Core/Logger.php b/src/Core/Logger.php
index e42f2f033a..a2e587342d 100644
--- a/src/Core/Logger.php
+++ b/src/Core/Logger.php
@@ -5,8 +5,6 @@
 namespace Friendica\Core;
 
 use Friendica\BaseObject;
-use Friendica\Factory\LoggerFactory;
-use Friendica\Network\HTTPException\InternalServerErrorException;
 use Psr\Log\LoggerInterface;
 use Psr\Log\LogLevel;
 
@@ -67,73 +65,22 @@ class Logger extends BaseObject
 
 	/**
 	 * Sets the default logging handler for Friendica.
-	 * @todo Can be combined with other handlers too if necessary, could be configurable.
 	 *
 	 * @param LoggerInterface $logger The Logger instance of this Application
-	 *
-	 * @throws InternalServerErrorException if the logger factory is incompatible to this logger
 	 */
 	public static function setLogger($logger)
 	{
-		$debugging = Config::get('system', 'debugging');
-		$logfile = Config::get('system', 'logfile');
-		$loglevel = Config::get('system', 'loglevel');
-
-		if (!$debugging || !$logfile) {
-			return;
-		}
-
-		$loglevel = self::mapLegacyConfigDebugLevel((string)$loglevel);
-
-		LoggerFactory::addStreamHandler($logger, $logfile, $loglevel);
-
 		self::$logger = $logger;
-
-		$logfile = Config::get('system', 'dlogfile');
-
-		if (!$logfile) {
-			return;
-		}
-
-		$developIp = Config::get('system', 'dlogip');
-
-		self::$devLogger = LoggerFactory::createDev('develop', $developIp);
-		LoggerFactory::addStreamHandler(self::$devLogger, $logfile, LogLevel::DEBUG);
 	}
 
 	/**
-	 * Mapping a legacy level to the PSR-3 compliant levels
-	 * @see https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md#5-psrlogloglevel
+	 * Sets the default dev-logging handler for Friendica.
 	 *
-	 * @param string $level the level to be mapped
-	 *
-	 * @return string the PSR-3 compliant level
+	 * @param LoggerInterface $logger The Logger instance of this Application
 	 */
-	private static function mapLegacyConfigDebugLevel($level)
+	public static function setDevLogger($logger)
 	{
-		switch ($level) {
-			// legacy WARNING
-			case "0":
-				return LogLevel::ERROR;
-			// legacy INFO
-			case "1":
-				return LogLevel::WARNING;
-			// legacy TRACE
-			case "2":
-				return LogLevel::NOTICE;
-			// legacy DEBUG
-			case "3":
-				return LogLevel::INFO;
-			// legacy DATA
-			case "4":
-				return LogLevel::DEBUG;
-			// legacy ALL
-			case "5":
-				return LogLevel::DEBUG;
-			// default if nothing set
-			default:
-				return $level;
-		}
+		self::$devLogger = $logger;
 	}
 
 	/**
diff --git a/src/Factory/DBFactory.php b/src/Factory/DBFactory.php
index 5970541c10..abfe6f99d0 100644
--- a/src/Factory/DBFactory.php
+++ b/src/Factory/DBFactory.php
@@ -7,6 +7,14 @@ use Friendica\Database;
 
 class DBFactory
 {
+	/**
+	 * Initialize the DBA connection
+	 *
+	 * @param Cache\ConfigCache $configCache The configuration cache
+	 * @param array             $server      The $_SERVER variables
+	 *
+	 * @throws \Exception if connection went bad
+	 */
 	public static function init(Cache\ConfigCache $configCache, array $server)
 	{
 		if (Database\DBA::connected()) {
diff --git a/src/Factory/LoggerFactory.php b/src/Factory/LoggerFactory.php
index e9bacb38e8..74f55e637f 100644
--- a/src/Factory/LoggerFactory.php
+++ b/src/Factory/LoggerFactory.php
@@ -35,16 +35,17 @@ class LoggerFactory
 		$logger->pushProcessor(new Monolog\Processor\UidProcessor());
 		$logger->pushProcessor(new FriendicaIntrospectionProcessor(LogLevel::DEBUG, [Logger::class, Profiler::class]));
 
-		if (isset($config)) {
-			$debugging = $config->get('system', 'debugging');
-			$stream = $config->get('system', 'logfile');
-			$level = $config->get('system', 'loglevel');
+		$debugging = $config->get('system', 'debugging');
+		$stream    = $config->get('system', 'logfile');
+		$level     = $config->get('system', 'loglevel');
 
-			if ($debugging) {
-				static::addStreamHandler($logger, $stream, $level);
-			}
+		if ($debugging) {
+			$loglevel = self::mapLegacyConfigDebugLevel((string)$level);
+			static::addStreamHandler($logger, $stream, $loglevel);
 		}
 
+		Logger::setLogger($logger);
+
 		return $logger;
 	}
 
@@ -56,25 +57,71 @@ class LoggerFactory
 	 *
 	 * It should never get filled during normal usage of Friendica
 	 *
-	 * @param string $channel      The channel of the logger instance
-	 * @param string $developerIp  The IP of the developer who wants to use the logger
+	 * @param string        $channel The channel of the logger instance
+	 * @param Configuration $config  The config
 	 *
 	 * @return LoggerInterface The PSR-3 compliant logger instance
 	 */
-	public static function createDev($channel, $developerIp)
+	public static function createDev($channel, Configuration $config)
 	{
+		$debugging   = $config->get('system', 'debugging');
+		$stream      = $config->get('system', 'dlogfile');
+		$developerIp = $config->get('system', 'dlogip');
+
+		if (!isset($developerIp) || !$debugging) {
+			return null;
+		}
+
 		$logger = new Monolog\Logger($channel);
 		$logger->pushProcessor(new Monolog\Processor\PsrLogMessageProcessor());
 		$logger->pushProcessor(new Monolog\Processor\ProcessIdProcessor());
 		$logger->pushProcessor(new Monolog\Processor\UidProcessor());
 		$logger->pushProcessor(new FriendicaIntrospectionProcessor(LogLevel::DEBUG, ['Friendica\\Core\\Logger']));
 
-
 		$logger->pushHandler(new FriendicaDevelopHandler($developerIp));
 
+		static::addStreamHandler($logger, $stream, LogLevel::DEBUG);
+
+		Logger::setDevLogger($logger);
+
 		return $logger;
 	}
 
+	/**
+	 * Mapping a legacy level to the PSR-3 compliant levels
+	 * @see https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md#5-psrlogloglevel
+	 *
+	 * @param string $level the level to be mapped
+	 *
+	 * @return string the PSR-3 compliant level
+	 */
+	private static function mapLegacyConfigDebugLevel($level)
+	{
+		switch ($level) {
+			// legacy WARNING
+			case "0":
+				return LogLevel::ERROR;
+			// legacy INFO
+			case "1":
+				return LogLevel::WARNING;
+			// legacy TRACE
+			case "2":
+				return LogLevel::NOTICE;
+			// legacy DEBUG
+			case "3":
+				return LogLevel::INFO;
+			// legacy DATA
+			case "4":
+				return LogLevel::DEBUG;
+			// legacy ALL
+			case "5":
+				return LogLevel::DEBUG;
+			// default if nothing set
+			default:
+				return $level;
+		}
+	}
+
 	/**
 	 * Adding a handler to a given logger instance
 	 *
@@ -106,32 +153,4 @@ class LoggerFactory
 			throw new InternalServerErrorException('Logger instance incompatible for MonologFactory');
 		}
 	}
-
-	/**
-	 * This method enables the test mode of a given logger
-	 *
-	 * @param LoggerInterface $logger The logger
-	 *
-	 * @return Monolog\Handler\TestHandler the Handling for tests
-	 *
-	 * @throws InternalServerErrorException if the logger is incompatible to the logger factory
-	 */
-	public static function enableTest($logger)
-	{
-		if ($logger instanceof Monolog\Logger) {
-			// disable every handler so far
-			$logger->pushHandler(new Monolog\Handler\NullHandler());
-
-			// enable the test handler
-			$fileHandler = new Monolog\Handler\TestHandler();
-			$formatter = new Monolog\Formatter\LineFormatter("%datetime% %channel% [%level_name%]: %message% %context% %extra%\n");
-			$fileHandler->setFormatter($formatter);
-
-			$logger->pushHandler($fileHandler);
-
-			return $fileHandler;
-		} else {
-			throw new InternalServerErrorException('Logger instance incompatible for MonologFactory');
-		}
-	}
 }
diff --git a/tests/include/ApiTest.php b/tests/include/ApiTest.php
index 7f2299d519..59096f5e5b 100644
--- a/tests/include/ApiTest.php
+++ b/tests/include/ApiTest.php
@@ -41,7 +41,7 @@ class ApiTest extends DatabaseTest
 		$configCache = Factory\ConfigFactory::createCache($configLoader);
 		Factory\DBFactory::init($configCache, $_SERVER);
 		$config = Factory\ConfigFactory::createConfig($configCache);
-		$pconfig = Factory\ConfigFactory::createPConfig($configCache);
+		Factory\ConfigFactory::createPConfig($configCache);
 		$logger = Factory\LoggerFactory::create('test', $config);
 		$profiler = Factory\ProfilerFactory::create($logger, $config);
 		$this->app = new App($config, $logger, $profiler, false);
diff --git a/tests/src/Core/Config/Cache/ConfigCacheTest.php b/tests/src/Core/Config/Cache/ConfigCacheTest.php
index 7b56ca6469..ac9fae540b 100644
--- a/tests/src/Core/Config/Cache/ConfigCacheTest.php
+++ b/tests/src/Core/Config/Cache/ConfigCacheTest.php
@@ -149,13 +149,34 @@ class ConfigCacheTest extends MockedTest
 		$configCache = new ConfigCache();
 
 		$this->assertFalse($configCache->has('system', 'test'));
+		$this->assertFalse($configCache->has('system'));
 
 		$configCache->set('system', 'test', 'it');
 		$this->assertTrue($configCache->has('system', 'test'));
+		$this->assertTrue($configCache->has('system'));
+	}
 
-		$this->assertFalse($configCache->has('system', null));
-		$configCache->set('system', null, 'it');
-		$this->assertTrue($configCache->has('system', null));
+	/**
+	 * Test the get() method with a category
+	 */
+	public function testGetCat()
+	{
+		$configCache = new ConfigCache([
+			'system' => [
+				'key1' => 'value1',
+				'key2' => 'value2',
+			],
+			'config' => [
+				'key3' => 'value3',
+			],
+		]);
+
+		$this->assertTrue($configCache->has('system'));
+
+		$this->assertEquals([
+			'key1' => 'value1',
+			'key2' => 'value2',
+		], $configCache->get('system'));
 	}
 
 	/**
@@ -194,6 +215,32 @@ class ConfigCacheTest extends MockedTest
 	}
 
 
+	/**
+	 * Test the getP() method with a category
+	 */
+	public function testGetPCat()
+	{
+		$configCache = new ConfigCache();
+		$uid = 345;
+
+		$configCache->loadP($uid, [
+			'system' => [
+				'key1' => 'value1',
+				'key2' => 'value2',
+			],
+			'config' => [
+				'key3' => 'value3',
+			],
+		]);
+
+		$this->assertTrue($configCache->hasP($uid,'system'));
+
+		$this->assertEquals([
+			'key1' => 'value1',
+			'key2' => 'value2',
+		], $configCache->get($uid, 'system'));
+	}
+
 	/**
 	 * Test the deleteP() method
 	 * @dataProvider dataTests
@@ -227,12 +274,10 @@ class ConfigCacheTest extends MockedTest
 		$uid = 345;
 
 		$this->assertFalse($configCache->hasP($uid, 'system', 'test'));
+		$this->assertFalse($configCache->hasP($uid, 'system'));
 
 		$configCache->setP($uid, 'system', 'test', 'it');
 		$this->assertTrue($configCache->hasP($uid, 'system', 'test'));
-
-		$this->assertFalse($configCache->hasP($uid, 'system', null));
-		$configCache->setP($uid, 'system', null, 'it');
-		$this->assertTrue($configCache->hasP($uid, 'system', null));
+		$this->assertTrue($configCache->hasP($uid, 'system'));
 	}
 }