Questions tagged [emq]

For questions concerning EMQ - Erlang MQTT open source MQTT broker implementation (formerly emqttd), including setup questions, issues with running the broker, and questions about the behaviour of Erlang MQTT Broker.

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3
votes
2answers
70 views

Is MQTT-SN still “new” or is it obsolete?

I have an existing IoT project based on MQTT and am looking at extending the application to include battery powered end nodes using Zigbee mesh. It logically seems the most appropriate way to do this ...
6
votes
3answers
585 views

MQTT Connection Using Keep-Alive > 5 Minutes Silently Disconnects on Azure VM Broker?

Summary of the issue: Connecting to test.mosquitto.org or iot.eclipse.org with a keep alive of more than 5 minutes, and everything seems to work just as expected. Connecting to my broker (both on ...
2
votes
0answers
97 views

Should I use emq+emq-web-hook to persist messages to database? [closed]

My idea is use the emq broker + emq-web-hook sending all published messages to NodeJS API that only will be send to RabbitMQ (balance) and I instantiate some applications to consume. Should this work?
10
votes
1answer
1k views

How does EMQ persist QoS 1/2 messages?

The EMQ (Erlang MQTT Broker) is a "distributed, massively scalable, highly extensible MQTT message broker" with a reported "1.3 million concurrent MQTT connections" - so it potentially allows a large ...
11
votes
2answers
686 views

Subscribing to MQTT birth and will topics? (emqttd)

I am running emqttd (emqtt.io). I would like to monitor clients connecting and disconnecting from a separate process that would be subscribing to a system topic where birth and will messages are ...