Any concept.
clear in 60 seconds.

Kafka consumers can use multiple threads to speed up message processing, but it complicates ordering and offset management.

Kafka's parallel processing depends on partitions, not just consumers or threads.

Kafka uses state stores to remember previous events in stateful stream processing.

Kafka uses partitions to allow parallel processing while ensuring message order with keys.

Kafka uses retry topics and delayed retries to manage message failures efficiently.