gistfile1.txt

//create logger
$this->logger = \TYPO3\Flow\Log\LoggerFactory::create('myLoggerName', 'TYPO3\Flow\Log\Logger', '\TYPO3\Flow\Log\Backend\FileBackend', array(
  		'logFileURL' => FLOW_PATH_DATA . 'Logs/myLoggerName.log',
			'createParentDirectories' => TRUE,
			'severityThreshold' => LOG_INFO,
			'maximumLogFileSize' =>  10485760,
			'logFilesToKeep' => 1,
			'logIpAddress' => TRUE
		));

//use logger
$this->logger->log('message', LOG_INFO, array('foo','bar'));