These error messages are a consequence of any scheme that stores session state on the server: the session data must expire, or the server will fill up. The pro

These error messages are a consequence of any scheme that stores session state on the server: the session data must expire, or the server will fill up. The problem would remain even if some other method of serialization was used instead of continuations. That said, I expect that continuations store more data than a hand-tuned serialization and thus need to be expired earlier. I'd be curious to know how much more space is used storing continuations versus the bare minimum.