emqx4.3/apps/emqx_retainer/README.md

Retainer

The emqx_retainer application is responsible for storing retained MQTT messages.

The retained messages are messages associated with a topic that are stored on the broker and delivered to any new subscribers to that topic.

More information about retained messages can be found in the following resources

• MQTT specification 3.3.1.3.
• Retained message concept in EMQX documentation.
• Instructions for publishing retained messages in EMQX documentation.
• The Beginner's Guide to MQTT Retained Messages.

Usage

The emqx_retainer application is enabled by default. To turn it off, add the following configuration to the emqx.conf file:

retainer {
    enable = false
}

For other options, see the configuration documentation.

Contributing

Please see our contributing.md.

License

See LICENSE