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Now c49ab6b4ae
MINOR: Optimize map lookup efficiency with getOrDefault (#20229) 
Optimized `getRemainingRecords()` method by replacing inefficient
`containsKey() + get()` pattern with `getOrDefault()` to reduce map
lookups from 2 to 1 per partition.

Reviewers: Chia-Ping Tsai <chia7712@gmail.com>
 		2025-09-20 11:52:29 +08:00
..
bin KAFKA-9922: Update demo instructions in examples README (#8559) 2020-04-29 19:31:26 -07:00
src/main/java/kafka/examples MINOR: Optimize map lookup efficiency with getOrDefault (#20229) 2025-09-20 11:52:29 +08:00
README.md KAFKA-14752: Kafka examples improvements - demo changes (#13517) 2023-05-12 10:39:12 +08:00

README.md

Kafka client examples

This module contains some Kafka client examples.

  1. Start a Kafka 2.5+ local cluster with a plain listener configured on port 9092.
  2. Run examples/bin/java-producer-consumer-demo.sh 10000 to asynchronously send 10k records to topic1 and consume them.
  3. Run examples/bin/java-producer-consumer-demo.sh 10000 sync to synchronous send 10k records to topic1 and consume them.
  4. Run examples/bin/exactly-once-demo.sh 6 3 10000 to create input-topic and output-topic with 6 partitions each, start 3 transactional application instances and process 10k records.