In Magento 2, the recommended replacement for the deprecated Mage::log method is to use the built-in logging framework that is based on the PSR-3 standard. The logging framework provides a standardized approach to logging messages across different libraries and applications.
To use the Magento 2 logging framework, you can inject the Psr\Log\LoggerInterface object into your class and use its log method to log messages. For example:
public function __construct(LoggerInterface $logger)
$this->logger = $logger;
public function myMethod()
// Log a message
$this->logger->info('This is a log message');
In the above example, the LoggerInterface object is injected into the MyClass constructor, and the info method is used to log a message.
By using the Magento 2 logging framework, you can take advantage of features such as log levels, log channels, and handlers, which can help you to organize and manage your logs more effectively. Additionally, using a standardized logging framework can make it easier to integrate with other libraries and applications that also use the same framework.