`tf.lookup.StaticHashTable.__init__` to create the table in anonymous
        mode. In this mode, the table resource can only be accessed via resource
        handles (not resource names) and will be deleted automatically when all
        resource handles pointing to it are gone.
*   `tf.data`:
    *   Introduce the `tf.data.experimental.at` API which provides random access

Additionally, a background task is normally an independent set of logic that should be handled separately, with its own resources (e.g. its own database connection).