What is the Kafka retry mechanism and how does it work?

What is the Kafka retry mechanism and how does it work?

The Kafka retry mechanism is a feature that allows messages to be retried in case of processing failures. It helps ensure message delivery.

How can I configure the retry settings in Kafka?

You can configure retry settings using the retries property in the producer configuration. This specifies the number of retry attempts.

What happens if the retries exceed the limit?

If the retries exceed the limit, the message will be sent to a dead letter queue (DLQ) if configured, or it may be dropped.

Can I customize the backoff time between retries?

Yes, you can customize the backoff time using the retry.backoff.ms property, which defines the wait time before the next retry.

Are there any best practices for using the retry mechanism?

Yes, it's best to set a reasonable retry limit, use exponential backoff for delays, and monitor your DLQ for failed messages.