SerializableTokenCache Class

This serialization can be a starting point to implement your own persistence.

This class does NOT actually persist the cache on disk/db/etc.. Depending on your need, the following simple recipe for file-based, unencrypted persistence may be sufficient:

   import os, atexit, msal
   cache_filename = os.path.join(  # Persist cache into this file
       os.getenv(
           # Automatically wipe out the cache from Linux when user's ssh session ends.
           # See also https://github.com/AzureAD/microsoft-authentication-library-for-python/issues/690
           "XDG_RUNTIME_DIR", ""),
       "my_cache.bin")
   cache = msal.SerializableTokenCache()
   if os.path.exists(cache_filename):
       cache.deserialize(open(cache_filename, "r").read())
   atexit.register(lambda:
       open(cache_filename, "w").write(cache.serialize())
       # Hint: The following optional line persists only when state changed
       if cache.has_state_changed else None
       )
   app = msal.ClientApplication(..., token_cache=cache)
   ...

Alternatively, you may use a more sophisticated cache persistence library, MSAL Extensions, which provides token cache persistence with encryption, and more.