Hello everyone, I have two questions about Kafka's operation.
1. Can I modify events after they are written to Kafka, or are they
immutable?
2. Do consumers always receive messages in the order they were sent by
Kafka?
Thank you in advance!
Hey Winstein,
1. You can’t modify events after they are written. They are immutable.
2. Consumers always see messages in order. Note this guarantee is per
partition. That is, the consumer is guaranteed to read messages in order for a
given partition. There isn’t a guarantee across partitions.
Hi,
point 1…. If you want to mutate the messsage you have this option.
1. Start a Ksql server
2. read from parent_topic, mutate and create child_topic where mutated
message will be published
3. your consumer will read child_topic to consume and processe the
message.
regards,
Sunil.
child_to
