How do you increase the throughput of a Kafka consumer?

Increase throughput by: 1) Adding more partitions to the topic (first check if all existing partitions are assigned). 2) Adding more consumers to the group (up to partition count). 3) Tuning fetch.min.bytes and fetch.max.wait.ms for batching. 4) Increasing max.poll.records to process more messages per poll. 5) Using multiple threads per consumer with careful offset management. 6) Reducing processing time per message through optimization or async processing.

Expected key concepts: partitions, consumers, fetch.min.bytes, max.poll.records, threads, processing time, batching, async