This summary provides an overview of how microservices can leverage Couchbase as a scalable and resilient datastore by subscribing to a Solace PubSub+ Topic, processing the data, and updating the document in Couchbase. The example application stores hotel details in Couchbase and updates the configuration with new attributes using the sub-document API for efficient updates. The process involves setting up a Solace PubSub+ Topic, creating a JCSMPSession, and implementing an XMLMessageConsumer to subscribe to messages from the topic. The received message is then converted to a JSON object and used to update the hotel document in Couchbase using the sub-document API. The code example is available on GitHub for further reference.