Updating a particular topic to a group of Things

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1

I have a fleet of devices (say 100) all subscribing to a particular topic and will react on respective publish. It’d be great if someone could advise on the below. TIA.

The topic is somewhat : cmd/smartcontrol/device1/command for device 1

If I want to publish a command to every device, I’d use a wild card character .

But if I’d like limit my publish to a certain group of devices/things (Devices 20 to 30 which is a static group). What would be the best solution?

Thanks.

2

Should I update the Broker End point to group arn?

3

Are you doing it programmatically? If so, constructing the topic for each device you want to publish to should not be a problem.

4

It would be done programmatically from the web app or Lambda.
Was wondering if there’s better way than publishing to each device’s topic sequentially.

Regards,
Surender

5

Do the devices have fixed grouping? If so, you can construct the topics per group:

cmd/smartcontrol/command/devicegroupA/device1

This way you can publish to all the devices of group A by using topic cmd/smartcontrol/command/devicegroupA/#.