Currently in Early Access, Data Saving Mode introduces several key changes to the LaunchDarkly data system that greatly improves resilience to outages. To learn more, read Data Saving Mode in the LaunchDarkly documentation.

Initialization Caching

In data saving mode, the SDK will poll for initialization and subsequently open a streaming connection to receive realtime flag configuration changes. We can achieve high initialization availability by adding a caching proxy between the SDK and the polling endpoint while leaving the direct connection to the streaming endpoint in place.

The standard datasystem will allow for falling back to polling when streaming is not available.