Session State Persistence After Server Restart in Streamlit

Session State Persistence After Server Restart in Streamlit

Determine whether Streamlit session state can be reliably recovered after a server restart without external backup.

Session state is stored in memory per browser session and is cleared on server restart, redeploy, or browser close, with no documented automatic recovery mechanism.

Because persistence depends on the running process and on Streamlit version, behavior may differ across releases, and no official verification tool exists for recovered data integrity.

1. How can developers guarantee session state durability across restarts?
2. Is there an official mechanism to persist session_state between deployments?
3. What documented limits constrain session state durability across restarts?