--- title: createMemorySessionStorage --- # createMemorySessionStorage [MODES: framework, data] ## Summary [Reference Documentation ↗](https://api.reactrouter.com/v7/functions/react_router.createMemorySessionStorage.html) Creates and returns a simple in-memory SessionStorage object, mostly useful for testing and as a reference implementation. Note: This storage does not scale beyond a single process, so it is not suitable for most production scenarios.