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A comment on Mosquitto: An open-source MQTT broker. Parent comment

Re:Mosquitto: An open-source MQTT broker by SavantIdiot on Wednesday September 29, 2021 @02:53PM (#28698202)
> events can get lost,

Well, yes, but QoS=1 or 2 with a reasonably large queue I haven't seen loss issues.

What kind of loss problems are you running into (that I should be worried about)?

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Re:Mosquitto: An open-source MQTT broker by IshKebab on Wednesday September 29, 2021 @03:05PM (#28698358)
Yeah I don't mean due to the protocol, I mean due to application bugs where something adds a message to some queue and the thing that is meant to process it doesn't for some reason, and then nothing will ever realise.

Compared to callbacks / RPC for example, where you have a function call the either has to succeed or it has to fail.

It's not a deal breaker but I don't like it.

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Re:Mosquitto: An open-source MQTT broker by RedShift1 on Wednesday September 29, 2021 @03:47PM (#28698945)
If your MQTT client allows control over this aspect of the protocol, you can just not ACK QOS > 0 messages that failed to process. Next time you connect you'll get the non-ACK'ed messages first.
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