What’s New

Version 1.49.0 released!

Aeron’s latest release enhances trading technology's performance and observability. With new IPC support for response channels, async counter creation, and improved client identification, capital markets can now achieve even greater speed, reliability, and transparency in their trading systems.

Get more details

Aeron MeetUp Recording: What’s New – June 2025

Learn about Publication Revoke for immediate stream cleanup, Image Reject for dynamic resource control, and new mechanisms to prevent dormant client interference. Full C/C++ archive client API parity is now also available. Explore new premium tools and see what's on the roadmap.

Get more details

Version 1.48.0 released!

Here are some of the highlights: Aeron v.1.48.0 offers immediate resource release, session rejection, improved client connections, GA status for response channels and C/C++ APIs, per-stream NAK counters, and various enhancements.

Get more details

Version 1.47.0 released!

Discover Aeron Archive client enhancement and stability improvements, Aeron Cluster multi-service messaging fixes and standby snapshot handling, NAK message logging, address re-resolution and more.

Get more details

New minimum JDK requirement

Aeron 1.46.0, Agrona 1.23.0, and SBE 1.33.0 now require a minimum of JDK 17 to compile and run, discontinuing support for JDK 8 and 11. This update ensures compatibility with modern build tools and dependencies, aligning with the broader Java ecosystem's shift away from older JDK versions.

Get more details

Version 1.45.0 released!

Prevent resource exhaustion via per stream session limits, automate group behavior settings for efficient nakking, improve visibility and debugging with detailed Archive logging, SBE DTO generation and more.

Get more details

Version 1.44.0 released!

Explore new Response Channels experimental feature, avoid stalls through async DNS resolution, improve tethering behavior, reduce recovery time in congested networks, loss recovery improvements and more.

Get more details

Version 1.43.0 released!

Fix failed nodes with Standby node transition, enhance performance & recovery with sender polling improvements, improve observability with snapshot duration tracking, hooks for Aeron Transport Selector, developer usability enhancements and more.

Get more details

Version 1.42.0 released!

Improved service availability with Cluster Standby Snapshots & Graceful Leader Close, simplified network access config via Port Manager, improved monitoring with Host Name Resolution Time Tracking and more.

Get more details

Version 1.41.0 released!

Enhanced support for 24/7 operation of Aeron Cluster, improved Cloud support, enhanced usability of Aeron Archive, upgrades & bug fixes.

Get more details

Version 1.40.0 released!

Improved leadership change handling, graceful leaving of flow control & Improved snapshot transfer to Cluster Backup.

Get more details