Hi Alf,
it's a good question!
RIFE has a WeakHashMap with the continuation ids and their
references, continuations also have a default timeout of 20 minutes,
after which they will become illegible for purging, which happens by
default 1 out of 50 requests (this is of course configurable).
Besides that you, can also setup each element to not clone
continuations if you don't need that behavior, and last, when a user
finished a flow, you can remove the entire active continuation tree
and thus all related state.
Hope this helps,
Geert
On 03 Jun 2006, at 17:03, Alf Mikula wrote:
Hey folks,
I'm having trouble finding an answer to this one on the rifers.org
site, and Google isn't turning it up either:
When I use continuations, how does rife manage the resources
associated with storing the execution frame? I'm thinking of using
continuations for paging results, and there's no clear end to the
paging process, since users can page back and forth through the
results. This essentially means that I would have a while(true)
loop in the program with a pause in it waiting to receive the next
offset from the user. That got me to thinking about continuations
and the web, and the fact that there's really no general
expectation that a user will come back to any continuation at all,
so I know this isn't a unique problem.
So, what does rife do? Does it have a limited size LRU list of all
the continuation frames? Weak references to let the JVM free them
up as needed? Fixed timeouts?
If there is a resource available on the web that gives this level
of detail, I'd really appreciate it if someone would point it out
to me.
Thanks,
-Alf
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Geert Bevin
Uwyn "Use what you need" - http://uwyn.com
RIFE Java application framework - http://rifers.org
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