Re: [aerogear-dev] FCM topic: use on alias as well ?

On Tue, May 30, 2017 at 10:32 AM, Oleh Mackiv <omatskiv(a)redhat.com&gt; wrote: > Hi, > I think this very much depends on what is the actual limit for number of > topics. > > Consider this use case, that would max out topics very quickly: > - register alias for each user > - if user has multiple devices, all his devices will have same alias > - if you want to notify some user, you just send notification to his > alias and UPS will distribute it to all devices that this user has registere > > We even suggest this in docs[1]: > "alias: A list of one or more *identifiers* (such as email or username) > to send messages to *ALL* devices of the user(s)" > > > P.S: Do you know how much topics you can actually register before you hit > the "messaging/too-many-topics" error ? > There is no magic number. It will raise the max if you are "spam" the server :/ https://stackoverflow.com/questions/38171259/maximum- number-of-topics-a-device-can-subscribe-to-in-fcm

From server point of view, it's not an issue

> > > [1] https://aerogear.org/docs/unifiedpush/push-message-format/# > query-component > > > > On Tue, May 30, 2017 at 2:43 PM, Matthias Wessendorf <matzew(a)apache.org&gt; > wrote: > >> Hi, >> >> on FCM related push, we do, in our client SDK, automatically subscribe a >> client to an annoymous topic, matching our immutable variant ID. >> >> If users are specifying categories, we do map those into topics as well. >> >> This is the related code in our Android SDK: >> https://github.com/aerogear/aerogear-android-push/blob/maste >> r/aerogear-android-push/src/main/java/org/jboss/aerogear/and >> roid/unifiedpush/fcm/AeroGearFCMPushRegistrar.java#L188-L193 >> >> How do people feel about doing that for the alias as well ? >> >> In the past we did not do it, since topics used to be a more restricted >> resource. Remember, the first notion of topics (GCM v3, at that time) were >> even limiting the number of max. subscribers? >> >> However, that changed, and I think it would be nice if we just use the >> topics for each alias of the app as well. This would speed up the time to >> deliver the push request to the FCM backend, since the UPS would no longer >> need to look up the device, a push, regardless how many devices, means one >> small HTTP to Google, per alias (aka topic) >> >> Any thoughts ? >> >> NOTE: There is a general limit of topic abuse, but that's on the app >> instance (see [1]), so our APP Developers need to make sure they don't go >> crazy w/ a gazillion of categories ;-) >> >> -Matthias >> >> >> [1] https://firebase.google.com/docs/cloud-messaging/admin/errors >> >> -- >> Matthias Wessendorf >> >> blog: http://matthiaswessendorf.wordpress.com/ >> twitter: http://twitter.com/mwessendorf >> >> _______________________________________________ >> aerogear-dev mailing list >> aerogear-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/aerogear-dev >> > > > > -- > Oleg Matskiv > Associate Quality Engineer > Red Hat Mobile Application Platform > omatskiv(a)redhat.com > > _______________________________________________ > aerogear-dev mailing list > aerogear-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/aerogear-dev > -- -- Passos _______________________________________________ aerogear-dev mailing list aerogear-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/aerogear-dev