Suggestion for message retention (qos 1)

[OsvaldoTCF]

With the purpose of serving 6 esp32 that spend a lot of time in sleep mode, would you have a suggestion about retention and later delivery of messages in subscribed topics?
Text files?
Could you suggest how I can start implementing this code?

[nopnop2002]

You can tell the broker to retain a message. However, it will at most retain 1 message per topic.

https://www.hivemq.com/blog/mqtt-essentials-part-8-retained-messages/

[GeckoNickDeveloper]

My original idea was only to keep few resources busy. I just woke up so maybe this will contain errors, but the idea was basically a small configurable matt broker that could handle few data in the queue Il mar 30 mag 2023, 02:33 nopnop2002 ***@***.***> ha scritto:

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