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From "Hanson Char" <hanson.c...@gmail.com>
Subject Re: YajCache used in our sample app
Date Tue, 03 Jul 2007 04:56:40 GMT
>   (2) synchronization across multiple processes within the same machine, and

Ever considered the nio FileChannel for locking/synchronization ?

Hanson Char

On 7/2/07, Russell East <reast@esri.com> wrote:
> Hi,
> I wanted to mention that we are using YajCache
> (http://yajcache.sourceforge.net/) within a map viewer that was just
> released on Friday at this location:
> http://www.arcwebservices.com/v2006/labs/mvj_lab.do .    It's currently
> in a beta state, so to get access to it, we ask interested people to
> sign-up (you get 90 days free) purely to find out if anyone is
> interested.  :-)
>
> What we were looking for was a light-weight client-side cache component
> that retains data retrieved from HTTP servers on local disk - basically
> to be used by a Java Web Start application or applet.  Initially, we
> were very surprised nothing seemed available for this (possibly small)
> application space.  Even Java seems to no longer support client-side
> caching within browser-based applets.  So, we were very happy to stumble
> across yajcache - it made sense in terms of sufficient basic cache
> features, as well as JAR size - yajcache weighs in at about 70Kb
> normally, but can be compressed to 20 Kb using pack200.
>
> Some things that would be really useful to see would be
>   (1) support for a least-recently-used strategy,
>   (2) synchronization across multiple processes within the same machine, and
>   (3) a "cache cleaner" that removes "old" data from disk.
>
> We wrote our own implementation of a cache cleaner, but no guarantees it
> works well without a solution for (2).  I dunno, maybe we could be smart
> and use sockets or something like that.   Anyway, for now, we're pretty
> happy with what is available.
>
> Feel free to give me feedback on the map viewer as a whole.   Thanks,
> -- Russell
> Software developer, ESRI,
> http://www.arcwebservices.com/v2006/
>
>
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