Integrating the Statsig SDK server-side in a Next.js application without a custom server or Vercel deployment can be achieved by utilizing the register
API to initialize the SDK on server startup.
This method allows for the SDK to be set up before serving requests, ensuring that feature flags and configurations are available for server-side rendering. However, it is important to note that the register
API may only trigger on the first request received by the server.
To ensure the SDK is initialized, a health check or similar request may be necessary to activate the register
process.
Additionally, depending on the hosting solution for the Next.js app, writing a data adapter to read Statsig configurations from a cache could be a viable alternative. This approach would involve creating a custom adapter that interfaces with a caching mechanism to retrieve the necessary configurations for Statsig.
For more detailed guidance on implementing feature flags with Next.js, refer to the official Statsig documentation.