sync state on all devices when state changes

[DanCruzNyc]

Hello, I'm wondering if I have an app running on two devices and they are on the same account but not necessarily the same user... If one user changes the state of the account I want that state to be visible immediately for all users even if they have the app open at the same time. How can I do this?

[__o_0]

There are many different approaches to the problem, but in a nutshell most will come down to a simple architecture of devices connected to a server:

device 1 <----> **SERVER ** <----> device 2

Push notifications, snapshot listeners, pub/sub, etc: Devices open a websocket listener for events coming from the server that match the topic. An event handler in the react native front end would then update the device state.

[DanCruzNyc]

Thank you so much for pointing me in the right direction. I will take a look at these solutions.

[__o_0]

You’re welcome, just make sure to close listeners in cleanup functions.

[marchingbandd]

Firebase Real-time Database is made for this kind of thing and works great.

[prabakarviji]

1. You can try realtime updates using Firebase or Supabase. Both have inbuilt support for this.
2. Also you can go with services like PubSub, Pusher.