Announcing the release of Apache Kafka 4.2.

Conf is a premier destination for technology enthusiasts, offering insights into technology conferences, industry events, and networking opportunities. Developers exploring Conf's  platform can discover resources, including event listings, speaker profiles, and attendee testimonials, to help them navigate the andscape of tech conferences. By staying informed about upcoming events, accessing resources for virtual conferences, and connecting with like-minded professionals, developers can learn, network, and identify career opportunities within the tech industry.

Confluent Blog

Apache Kafka 4.2.0 is now available, bringing several major improvements. Share Groups (Kafka Queues) are now production-ready, featuring a new RENEW acknowledgement type for extended processing, adaptive batching for share coordinators, configurable fetch record limits, and comprehensive lag metrics. Kafka Streams gains GA status for its server-side rebalance protocol, dead letter queue support in exception handlers, anchored wall-clock punctuation for deterministic scheduling, and explicit control over leave-group behavior on shutdown. Observability is improved with standardized CLI arguments, corrected metric naming following the kafka.COMPONENT convention, and new idle ratio metrics for controllers and MetadataLoader. Security enhancements include an allowlist connector client configuration override policy and thread-safety fixes to RecordHeader. Additional changes cover external schema support in JsonConverter, dynamic remote log manager thread pool configuration, adaptive batching in group coordinators, and rack ID exposure in the Admin API.

Apache Kafka 4.2.0 Released: Share Groups, Streams & More

Kafka Broker, Controller, Producer, Consumer and Admin Client