Question

If multiple consumers subscribed for a topic and each belong to different Consumer Group, the messages of the topic will
be consumed by all consumers. This is:
Queuing model
Publish-Sunscribe model​

Answer 1

If multiple consumers subscribed for a topic and each belong to different Consumer Group, the messages of the topic will be consumed by all consumers. This is: Queuing model

• The messages on the topic will be evenly distributed among consumers if each customer is a member of the same consumer group; this is known as a "queuing model." A "publish-subscribe" paradigm, in contrast, requires that each consumer belong to a unique consumer group in order for each client to receive and process each message.
• Multiple partitions may be assigned to the same customer. As a result, several Kafka consumers from a consumer group are not allowed to read the same message from a partition because the rule in Kafka states that only one consumer in a consumer group can be allocated to consume messages from a partition in a topic.
• Customers of Kafka often belong to a consumer group. Each consumer in a group of subscribers to a topic who is a member of the same consumer group will get messages from a distinct subset of the topic's partitions.
• We might have a group of listeners who are interested in various subjects. We can link data across two topics if they have the same key-partitioning scheme and number of partitions.

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