Using Data Transfer Objects with Drupal 11 Queue API

Phil Norton has outlined the advantages of using Data Transfer Objects (DTOs) within Drupal's Queue API in his recent blog post on Hashbangcode. He explains how the Queue API serializes and unserializes data when working with the queue database system, highlighting that while arrays or PHP’s 'stdClass' object are commonly used for queue data, these approaches can be cumbersome. By employing DTOs, developers can standardize data handling with immutable objects, enhancing reliability and error prevention. 

Norton demonstrates the implementation of DTOs, including creating a readonly class in PHP and integrating it with the Queue API to store and retrieve structured data. He further illustrates the rejection of invalid queue items during processing using the 'instanceof' operator to ensure only valid objects are processed. The blog post concludes by emphasizing the benefits of using DTOs for reliable data transport without adding additional functionality, alongside a GitHub repository with code examples to support the implementation.