FlashMQ
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  • 2023-06-05
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FlashMQ 1.5.0 released

Because this release marks a license change to a more permissive license, the minor level was bumped from 4 to 5. Other than that, there are no functional additions. There have been various improvements and fixes: Packages available for download and installation.

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  • 2023-05-11
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FlashMQ 1.4.5 released

There were two bugs that affected only non-AMD64 systems (like ARM): Packages available for download and installation.

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  • 2023-05-08
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FlashMQ 1.4.4 released

Small maintenance release: Packages available for download and installation.

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  • 2023-04-20
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FlashMQ 1.4.3 released

Quickly after release 1.4.2. It fixes erroneously using an outgoing topic alias when the incoming packet had one.

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  • 2023-04-19
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FlashMQ 1.4.2 released

Bugfix release: As usual, debs and an AppImage are available for download.

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  • 2023-03-26
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FlashMQ 1.4.0 released

FlashMQ 1.4.0 has been released. It’s main change is a change in the plugin API, to allow access to the payload. This release also marks the end of Ubuntu 18.04 support. The C++ level was upped to C++17, which is not available on (the compilers on) Ubuntu 18.04. Plus, Ubuntu 18.04 is about to be […]

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  • 2023-03-12
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Async MQTT authentication (using libcurl)

Check out the example plugin for async authentication using libcurl. Asynchronous calls are calls that don’t block your program while waiting for a response. Instead of waiting for a response to a network request (for instance), you will initiate the request and check for a result later. If you don’t do this asynchronously for a […]

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  • 2023-03-04
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FlashMQ 1.3.0 released

Aside from some bug fixes and internal refactoring, these new features have been added: AppImage and debs are available on the download page.

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  • 2023-02-05
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FlashMQ 1.2.0 released

Aside from some internal development fixes, these new features have been added: AppImage and debs are available.

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  • 2023-01-16
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A Million Dollar Bill at AWS IoT Core

When you have a high message volume, an important consideration is cost. Check out this comparison.

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  • Home
  • About FlashMQ
    • About FlashMQ
    • Demo
  • Announcements
  • Download
    • Download FlashMQ
    • Download MQTT Load Simulator
  • Documentation
    • Plugin
    • Man page flashmq
    • Man page flashmq.conf
    • Let’s Encrypt
    • Security and Stability
    • Understanding clean session and clean start
  • Benchmarks

Latest blog posts

  • FlashMQ 1.26.2 released 2026-05-14
  • FlashMQ 1.26.1 released 2026-04-21
  • FlashMQ 1.26.0 released 2026-03-08
  • FlashMQ 1.25.0 released 2026-01-25
  • FlashMQ 1.24.0 released 2025-12-11

FlashMQ elsewhere

  • FlashMQ.com
  • FlashMQ on GitHub
  • FlashMQ on YouTube

Contact & Support

To contact the FlashMQ developers, you can email them directly at contact@flashmq.org or via the FlashMQ issue tracker.

For commercial support (and soon managed hosting), look no further than FlashMQ.com.