Chapter 3, Message Brokers

1. Queue-based, cache-based, and stream-based.
2. While AMQP is a popular messaging protocol, there are plenty of applications that use HTTP, TCP, MQTT, or other protocols to send and receive messages.
3. Yes. Whether through a traditional request-response or more modern mechanisms such as WebSockets, HTTP is perfectly viable as a transport mechanism.
4. This will depend on your overall application design choices and what works best for you and your team. Each approach has benefits and drawbacks.
5. At-most-once is the most likely to be susceptible to data loss.
6. Yes – so long as one functioning broker exists, a Kafka cluster can function.
7. Zookeeper tends to the different brokers within the cluster by providing configuration data, determining the active broker through leader election, and more.
8. No – topics can be created from the command line, using a GUI interface such as Kafdrop, or even programmatically via code when you...