mosquitto-users team mailing list archive

[horace <contactyunkong@xxxxxxxxx>]

i just implemented a database storing on server side, here is how i did it:

1. setup a broker(server), let's call it S,  

2. Then build a client (call it A) using any server side language you like (i used python, you can try with C or PHP), Roger's source code package has a complete Python client implementation you can subclass from. In this client A, you can subscribe all kinds of topics you want to record in a database (I assume you know how to do that). 

3. In the on_message method of A,  you need to add a republish step after you strong the data in db. You may need to modify the topic text a bit to avoid circular bounce back . If you don't do that but republish the message with same topic, the client A will get it again and keep storing and republishing the message over and over again. (obviously i made this stupid mistake, hah)

3. Then from the local client B..., you can publish any topics to S, S will send it to A, A will store it in db and republish it (with modified topic), then B/C/D/E/F… will receive it if they subscribed the topic.

note: S and A can be running on same server, they can also be separated, it's your decision. for dev environment, you can definitely put S, A and DB on one machine. 

I may open source my implementation of these simple structure when it gets robust enough.

-horace


On Nov 13, 2012, at 12:17 AM, Joe Zhu <zhuzhuojiang@xxxxxxxxx> wrote:

> Our project need to setup and Android push notification service. I noticed many of projects are using MQTT protocol and I found this mosquitto. 
> Any people has this experience for this? Will it be a problem while the subscribers grow up？
> What configuration do I need to handle for 20,000+ subscribers with QoS >1?
> Any dashboard and UI for mosquitto to monitor?
> Is it possible to integrate DB/Memcache/Mongodb for message tracking?
> I'm not sure if it is a right place to ask this type of question in this mailing list,  if not, sorry about it.
> 
> Thanks. 
> 
> 
> -- 
> Joe Zhu
> 
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