[corty]

The most efficient decentralized way would be direct end-to-end connections. One could assign an IPv6 address to each application and have the notifications just sent there, no middleman necessary. If an application takes up too much battery, just kill it by changing the address.

That would be a killer app for IPv6 if mobile networks were up to it...

[owowow]

Many LTE networks are IPv6 first, with IPv4 only services generally performing much worse or being unreachable. All 3 US Cell carriers have made this jump, though you see people complaining about IPv4 only sites and services not loading or working poorly through CGNAT.

[corty]

Yes, but for my approach to work, the device would have to be able to use multiple addresses that are preferrably randomized. Not sure that that will work everywhere.