Building an Event-Driven System in Drupal with Subscribers and Queue Processing | TO THE NEW Blog

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The article explains how to implement an event-driven architecture in Drupal using custom events, subscribers, and queue workers to move heavy processing to the background. It walks through a custom module that fires an ArticleCreatedEvent on node creation, an ArticleSubscriber that assigns priority and pushes data to a queue, and an ArticleQueueWorker that processes items and calls an external API. The tutorial includes service registration, dependency injection, example code for each component, and instructions to test the flow with drush queue:run. The pattern improves response time, scalability, and maintainability by decoupling immediate request handling from longer-running tasks.

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