The Publish/Subscribe pattern enables developers to design systems that produce and receive messages. It is implemented for BonsaiDb through the PubSub and Subscriber traits.

A common example of what PubSub enables is implementing a simple chat system. Each chat participant can subscribe to messages on the chat topic, and when any participant publishes a chat message, all subscribers will receive a copy of that message.

A working example of PubSub is available at examples/basic-local/examples/