that's exactly what I wanted to know. So we then agree than this must
be cleared at the end of each execution. If that's the case then no
caching is needed, but we would need a cache per execution request to
allow concurrent executions
On 9/23/07, Jason van Zyl <[EMAIL PROTECTED]> wrote:
>
> On 23 Sep 07, at 8:28 PM 23 Sep 07, Carlos Sanchez wrote:
>
> > Hi, this is a thread to gather other people's opinions on the usage of
> > caching inside core maven
> >
> > While using the embedder I've come across some caching issues, mainly
> > MNG-3008, but also MNG-3170 and MNG-3013
> >
> > For instance in org.apache.maven.project.build.ProjectBuildCache
> > projects are being cached but never removed (please correct me if this
> > assumption is wrong), so we would need some features like
> > - maximum size of the cache
> > - eviction policy (FIFO)
> > - programatically evict projects (eg. when the pom file changes)
> > ...
> >
>
> It was only intended for the session and should be flushed after the
> session. We tried to remove all optimization so that we could focus
> on correctness and tackle the refactoring of the project builder. If
> it's not flushed at the end of the reactor run then that's all that
> needs to be done.
>
> > These requirements mean to me that a "real" cache would need to be
> > used instead of HashMaps, something like ehcache or Apache JCS that
> > already have all that implemented.
> >
>
> -1
>
> That's way too much overkill, especially for the core in a CLI run. I
> mean really what are the rules?
>
> 1) If it's a release it shouldn't change and you can hold on to it
> the entire life of the embedder.
> 2) If it's a snapshot hold on to it during the session and then flush
> it so that you get a new one the next session. If you wanted to get
> fancy and check timestamps, or md5s for snapshots without the local
> reactor you probably could here, but the simple rule of tossing post-
> session would probably work just fine.
>
> How much more complicated is it then that?
>
> We already discussed this when Joakim attempted this and it's just so
> much overkill.
>
> > What do other people think?
> >
> > --
> > I could give you my word as a Spaniard.
> > No good. I've known too many Spaniards.
> > -- The Princess Bride
> >
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> >
>
> Thanks,
>
> Jason
>
> ----------------------------------------------------------
> Jason van Zyl
> Founder and PMC Chair, Apache Maven
> jason at sonatype dot com
> ----------------------------------------------------------
>
>
>
>
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>
--
I could give you my word as a Spaniard.
No good. I've known too many Spaniards.
-- The Princess Bride
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