50 Million Concurrent PubSub Connection Infrastructure @ Hotstar

Re:50 Million Concurrent PubSub Connection Infrastructure @ ... by polskibus on Monday June 10, 2019 @11:50AM (#20147843)

Thanks a lot. Do you know of any real world mqtt deployments that deploy QoS 1 or 2 with success on non trivial scale? Can you recommend a broker impl. that is well tested in those scenarios?

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Re:50 Million Concurrent PubSub Connection Infrastructure @ ... by piyushgupta27 on Monday June 10, 2019 @01:18PM (#20148724)

There are some big players that use MQTT although i am not sure about the QoS levels. I know WhatsApp used MQTT, although i am not sure if they still do it not or what QoS they used. My bet would be they used QoS 1.

There are multiple brokers for MQTT: Mosquitto, HiveMQ (Java), VerneMQ (Erlang), EMQ: the one we used (Erlang) etc. You can find out more brokers that are available as well.

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