HiveMQ Community Edition 2021.1 is released

The HiveMQ team is pleased to announce the availability of HiveMQ CE 2021.1.

This release provides plenty of great improvements and fixes:

🌟 Features

• The retain as published subscription option is now supported for shared subscriptions
• Added option to override the default destination of automatically-generated heap dumps to facilitate troubleshooting in containerized environments

✨ Improvements

• Improved performance and memory usage, especially:
  • Streamlined handling for multiple connected clients to limit memory consumption and increase performance
  • Optimized message throughput for subscribers with high publication rates
• Enhanced in-memory persistence performance, including:
  • Reduced GC pressure for better in-memory persistence performance
  • Fewer context switches for better in-memory persistence performance
• Improved handling of shared subscriptions that have large numbers of inflight messages
• Improved scaling of clients with the same shared subscription
• Improved payload persistence

ℹ️ Misc

• Updated dependencies

You can find more information about and download the release on the GitHub release page.

You can get the new embedded API as a Maven artifact from Maven Central, JCenter, or JitPack.

Be sure to check out the project on GitHub.

We recommend this upgrade for all HiveMQ Community Edition users.

Have a great day,

Silvio from the HiveMQ Team

About Silvio Giebl

Silvio Giebl is a software developer at HiveMQ and maintainer of the HiveMQ MQTT Client open-source library. He is interested in high-performance applications on the JVM and reactive programming.