A message written to a Kafka topic results in the creation of a new online shopping order. What is the best method to update the order when a new message is received by Kafka containing a status…

The correct answer is A. Write a Kafka producer that will create a new message based upon the updated order status. Kafka records in a topic are immutable, so you cannot modify or "update" an existing message once it has been written. To update the order status, you publish a new event (a new message) describing the updated status to the topic using a producer; consumers or downstream…

Apache Kafka Fundamentals

Question

A message written to a Kafka topic results in the creation of a new online shopping order. What is the best method to update the order when a new message is received by Kafka containing a status update?

Options

AWrite a Kafka producer that will create a new message based upon the updated order status
BWrite a Kafka Streams application that can update/modify the order message
CWrite a Kafka producer that will locate and update the order message
DUse a Kafka connector to update the original order message

How the community answered

(44 responses)

A
80% (35)
B
11% (5)
C
2% (1)
D
7% (3)

Explanation

Kafka records in a topic are immutable, so you cannot modify or "update" an existing message once it has been written. To update the order status, you publish a new event (a new message) describing the updated status to the topic using a producer; consumers or downstream services then derive the current order state by processing the sequence of events for that order.

Topics

#message immutability#producer design#event-driven#order status

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