Couchbase's asynchronous event-driven architecture enables real-time updates across its services by streaming document mutations to its Index, Analytics, Eventing, and Search functionalities. This blog post outlines how to integrate Couchbase with the Solace PubSub+ event broker using the Couchbase Eventing Service, which triggers JavaScript functions in response to data changes. By employing a REST messaging API, the Eventing Service sends mutated documents to a Solace Topic, allowing subscribers to consume these updates via various protocols such as JMS and MQTT. The integration utilizes a sample application demonstrating this process, including setting up a Couchbase single-node cluster and configuring Solace with topics, queues, and REST delivery endpoints. The article emphasizes that while the example uses basic cURL POST requests, a production-ready solution would require more robust error handling and retry mechanisms. The guide concludes with recommendations for leveraging the Solace platform's quality of service features and encourages readers to explore further resources on Couchbase Eventing.