This directory contains data sources for use in the Background Sync system.

These sources implement IDataSynchronizer, which provides an interface that allows for passing in an IDestination to which data updates should be sent.

There are two primary sources supported by the server-side SDK.

One is the streaming source: it receives updates from a web-service (via Server-Sent Events).

The other is polling: it periodically hits an endpoint to retrieve a full payload of flag data.

By default, the SDK uses the streaming source. Users can optionally configure the polling source if streaming isn't feasible or desired.