Using ivy in offline mode
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                 Key: IVY-879
                 URL: https://issues.apache.org/jira/browse/IVY-879
             Project: Ivy
          Issue Type: Improvement
          Components: Core
            Reporter: Jean-Louis BOUDART


I recently tried to use ivy in offline, everything is in ivy-cache, but ivy 
seems to check dynamique revision all the time.
Exemple:  Suppose you have this dependency on your project
    <dependency org="jasperreports" name="jasperreports" rev="2.0.5" 
conf="runtime->runtime"/>

Looking in the POM file 
(http://repo1.maven.org/maven2/jasperreports/jasperreports/2.0.5/jasperreports-2.0.5.pom)
 we can see that jasperreports depends on commons-logging#[1.0,)

This revision is evaluated on every resolve/retrieve. 
I've tried to tune my cache with a large TTL, but the problem is still here.
My cache configuration : 
        <caches default="mycache" checkUpToDate="false">
                <cache name="mycache" basedir="${ivy.home.dir}/ivy-cache" 
defaultTTL="1d">
                        <ttl revision="latest.integration" duration="1d" />
                </cache>
        </caches>

Maybe there is a regression on my version?

Even if the TTL options seems to be interessant, i'm not so sure that this is 
the best solution for working in "offline mode".
It could be a nice improvement to reuse the cache even if TTL is expired when 
repo are not reachable.

What do you think about it?


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