AWS Mobile Push with users that may be logged into multiple devices

Question

Our apps are being developed for both Android and iOS. We are using AWS SNS Mobile Push to push messages to both GCM and APNS. The back end is PHP and so it uses the AWS PHP SDK.

Until now, our system has been saving 1 Endpoint ARN per user. We then broadcast a Mobile Push message directly to this Endpoint ARN.

The question:

It would be strange if a user were logged into our app on multiple devices and did not receive push notifications on all of them. So - we're going to have to change something.

How, in AWS Mobile Push, is the concept of 'one user, multiple devices (and potentially multiple platforms) handled?

Does our system have to maintain a one-to-many association of user-to-EndpointARNs (i.e. start saving multiple EndpointARNs per user so that we may push messages to all of them sequentially)?

Or should I be looking into the 'Topics' concept that Mobile Push provides (I'm confused here - do some people use one topic per user, and then push messages to the topic itself?)..

Lastly - I guess as a bonus question - is it normal for people using the PHP AWS SDK to include both APNS and GCM attributes in the Message payload array? We haven't been keeping track of 'which type of device each user uses'. We've just been saving an Endpoint ARN per user. And I guess the thought was to just cover all our platform bases (APNS, APNS_SANDBOX, GCM) when we're pushing a message to an endpoint.

I've been doing a lot of searching on the 'one user with multiple devices' topic re: Mobile Push with AWS SNS, and really the results have been quite unhelpful.

Help please :(

Thanks!

Answer 1

Once you send SNS Push message , you will get success or failure reason. Could you please check your logs and share to identify exact issue.

Cloudwatch : SNS publishes Cloudwatch metrics for number of messages published, number of successful notifications, number of failed notifications and size of data published. Metrics are available on per application basis. You can access Cloudwatch metrics via AWS Management Console or CloudWatch APIs.

Direct addressing: Direct addressing allows you to deliver notifications directly to a single endpoint, rather than sending identical messages to all subscribers of a topic. This is useful if you want to deliver precisely targeted messages to each recipient. When you register device tokens with SNS, SNS creates an endpoint that corresponds to the token. You can publish to the token endpoint just as you would publish to a topic. You can direct publish either the text of your notification, or a platform-specific payload that takes advantage of platform-specific features such as updating the badge count of your app. Direct addressing is currently only available for push notifications endpoints.

Official documentation, "When a topic is created, Amazon SNS will assign a unique ARN (Amazon Resource Name) to the topic.

https://aws.amazon.com/sns/faqs/