HiveMQ Community Edition 2020.3 is released

Written by Silvio Giebl

Category: HiveMQ CE

Published: July 7, 2020


The HiveMQ team is pleased to announce the availability of HiveMQ CE 2020.3.

This feature release provides plenty of great new features and improvements:

🌟 Features

  • Embedded API which allows you to use HiveMQ CE in any Java application
  • In memory persistences for use cases that want to avoid disk usage
    • In memory payload persistence
    • In memory queued messages persistence
    • In memory retained messages persistence
    • In memory session persistence
    • In memory subscription persistence
  • Extension start priority to control the order in which extensions are started

✨ Improvements

  • Enhanced isolation of the parameter objects that are passed to extension interceptors so that different extensions cannot interfere with each other
  • Minor memory improvement for fan-out scenarios
  • It is now possible to limit the amount of connections via the max-connections configuration

🐞 Bug fixes

  • When a ConnectInboundInterceptor is used, MQTT 3.x clients are now not handled as MQTT 5 clients anymore
  • Improved takeover handling when multiple concurrent connections share the same client identifier
  • Trust store and key store paths now use HIVEMQ_HOME correctly

ℹī¸ Misc

  • Updated all dependencies
  • Improved run scripts
  • Improved systemd service


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 to upgrade if you are an HiveMQ Community Edition user.

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.
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