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Legacy Server SDKs

Statsig's long-lived Server SDKs, which are transitioning to the Server Core framework

Statsig is transitioning to the Statsig Server Core architecture, which unifies all Server SDKs around a performance-optimized core package. This model delivers improved performance and greater feature consistency. Most customers continue to use legacy SDKs, which remain supported except for major feature additions.

Timelines

End-of-life dates have been announced for some Legacy Server SDKs. Server Core SDKs often evaluate 5-10x faster than legacy SDKs and are more feature complete. Go to the docs for existing SDKs below:

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