[plt-scheme] Serializable continuations?

pedro pinto wrote:
> Fair points, but still we would be much better of than now, when we 
> cannot even shutdown the web-server, let alone change the code, right?
> 
> What I am trying to say I guess, is that if I was running a big web 
> service I might be ok with loosing user sessions when there is an 
> upgrade. I definitly would not be happy about having to match user 
> requests to specific (possibly dead) instances of the web-server or with 
> keeping two week old continuations in main memory.

Serializable continuations would be cool - and hard to implement.
In the web-server one could save the continuation at disk and send
an id-number to the client.

For maintenance of the web-server, one might at least on a Unix box, be 
able to use program images as described here:

<http://docs.plt-scheme.org/mzscheme/mzscheme-Z-H-14.html#node_sec_14.5>

-- 
Jens Axel Søgaard