GCM Usages - Notifications and updates

[Moran A]

Dear All,

I use GCM (will upgrade to FCM soon) to send notifications to my clients, Android based devices.

In addition, due to the fact that each change effects other users view, i update those controllers using GCM as well.

Is it the best practices, to use GCM for notifications and updated for other clients?

Is there a better way?

Should i use GCM just for notification and not for updates?

Thanks in advance.

[Diego Giorgini]

Hi Moran

GCM (and FCM) provides notification-messages (for easy to implement notifications) and data-messages (for more custom notifications or any custom logic).

The main best practice I can recommend is to keep the logic triggered by data-messages very quick (less than 10 seconds). In case you need to execute for more than 10 seconds I recommend to use GCM/FCM to register a JobScheduler task, and perform the long computation inside the JobScheduler task.

Best,

- Diego

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[Moran A]

Hi Diego,

Thanks for your reply.

The frequency for my updates changes from time to time, it can be every couple of seconds, minutes and hours.

What's best for general updates with different frequency?

How to use the JobScheduler? what cases?

 

Thanks.

[Diego Giorgini]

I was not referring to the frequency of the updates, but on the length of the computation after you receive the message.

If the message triggers a notification, change on the UI, or a quick write to disk, then you don't need to schedule a JobTask because these operations will take less than 10 seconds.

If the message triggers the download of a big file, a long sync operation, or any other time-consuming operation, then you should use GCM to schedule a task with the JobScheduler. And perform the long operation in the JobScheduler task.

https://developer.android.com/topic/performance/scheduling.html

To view this discussion on the web visit https://groups.google.com/d/msgid/android-gcm/c797a556-0a45-41ab-b711-1b68efdd41de%40googlegroups.com.

[Moran A]

No, it's very quick and does last long. .

Does it mean that i can use GCM for all cases (notifications and updates) and not other pub-sub mechanism for updates?

i'm asking because i guess Google doesn't give us commitment that the notification certainly arrives.

Thanks.

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