- Publisher applications can receive messages from a topic.
- Subscriber applications can subscribe to a topic to receive the message when the subscriber is ready.
- Publisher applications can send messages to a subscriber.
- Subscriber applications can send messages on a topic directly to publisher applications.
You’re in a brainstorming session with your co-workers. You come up with five topics for your ebook, your colleague says that’s all you need. How should you respond?
“Yes, there’s no reason to keep going if we have enough topics for our ebook.” “Yes, we can always identify more later if we need