Based on this question Sync data between Android app and web server , I would like to know if there is an existing javascript (not native) SyncAdapter for the Ionic app (just angular is ok too). If not, I would like to get some recommendations for writing one of the following aspects:
- How to maintain consistency between application data and server data.
- How to manage the offline situation of the application.
- Recommended interval for updating from the server
- Battery Saver Management
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