I am new to Kafka and am using Kafka Dotnet Confluent, considering the following architecture within ASP.NET Core Blazor Server web application 
Due to the expense associated with a consumer, I have read that it is recommended to have a singleton kafka consumer per process. This executes within a long running task that lasts for the process lifetime.
If I want logged in users to be able to receive updates on an application page to monitor messages received from kafka topic .........how can I get each user's scoped service to automatically receive notification of consumed messages and update the page?
- SignalR?
- Posting an event (for each consumed message) to an event bus, eg. NServiceBus, Rebus etc? Each frontend page refreshes upon notification of an event received from the event bus.....
- API to act as a front end to the kafka topic. Each front end page for the logged in user then frequently polls the API to refresh?