This sample demonstrates how a single, centralized subscription storage in SQL Server can be used to enable pub/sub between any number of endpoints without the need to map any of them to eachother.
Each endpoint can subscribe/unsubscribe independently by doing a await bus.Subscribe<string>(), and since the subscription storage is configured
to be "centralized", the subscription is established directly.
Whenever an endpoint publishes a System.String, all the current subscribers will get a copy of the message.
NOTE: The sample requires the presence of a local database named messagebus, unless you change the connection string.