Thanks again!

But then I have a related question: when you terminate some request
that has last too long, you just kill the whole JVM? Cannot that
affect other petitions attended by other servlets (running in
different threads) of the same application running in that JVM?

Best,
Luis

On Jul 1, 8:02 pm, "Ikai L (Google)" <ika...@google.com> wrote:
> No, applications run inside their own JVM.
>
>
>
> On Thu, Jul 1, 2010 at 7:23 AM, Luis <luis....@gmail.com> wrote:
> > Hi,
>
> > I'm making a survey about security in PaaS platforms, and I have a
> > question about GAE that maybe you can help me with. It is well known
> > that GAE uses Jetty as the servlet container. However, I have not been
> > able to find any information about whether each Jetty instance hosts
> > servlets of one single user or the same Jetty instance can host
> > servlets of different users at the same time.
>
> > I wonder about that because I think it is an important question in
> > these environments: Java has certain limitations regarding isolation
> > (possible reference leaks). If the same Jetty instance runs servlets
> > of different users, then a malicious tenant could try to exploit those
> > limitations to access to servlets from other users. If, on the other
> > hand, each Jetty instance runs servlets only from an unique user, then
> > that problem cannot affect GAE.
>
> > Thank you very much for help!, regards,
> > Luis
>
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> --
> Ikai Lan
> Developer Programs Engineer, Google App Engine
> Blog:http://googleappengine.blogspot.com
> Twitter:http://twitter.com/app_engine
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