Does the cache tag cache to disk or just in memory?

"Blatt, Katie" <[email protected]>
Newsgroups gmane.comp.java.open-symphony.os-cache
Message-ID <DE02BED2D98D4144A894EEDD04086F740A35A6@exmail01.sm.edmunds-corp.com> 
We are investigating using OSCache for caching JSP content. What I can't
find is whether or not the cache tag will write the cache to disk, or
just to memory.  I'm hoping only in memory, because what I want to do is
set the time="-1" to the tag (never expire), but I do want the cache to
expire when our app server is bounced, which will happen if the cache is
just in memory.
 
Anyone know?
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