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From "Costin Manolache" <cos...@gmail.com>
Subject Re: Osgifing Tomcat
Date Fri, 25 Apr 2008 00:50:24 GMT
I'm not an expert, but I think I can tell you that yes, "hello world"
applications can be upgraded without stopping, real
applications can't.

As long as you use sessions or statics or you make config changes -
you have to restart the webapp.
OSGI is good of having 2 versions of a bundle running at the same time
- but it won't help you much, the servlet
engine needs to know where to send the requests, it has no clue a
request should go to the old version or the new.

Costin

On Thu, Apr 24, 2008 at 5:17 PM, David Jencks <david_jencks@yahoo.com> wrote:
>
>  On Apr 22, 2008, at 6:25 PM, Paul Benedict wrote:
>
>
> > Is that enough so that web applications, either as a whole or in partial,
> > can be upgraded without stopping them? It's my understanding that if web
> > applications are loaded in an OSGi classloader, these kind of things are
> > possible.
> >
> >
>  I've heard various claims of this nature from osgi zealots, but when
> talking to apparent experts the only things resembling this they seemed to
> know about were grad student experiments that did not have production use as
> even a far-in-the-future goal.  Do you know of any actual examples of this
> kind of behavior that actually work under load?
>
>  thanks
>  david jencks
>
>
>
>
>
> > Paul
> >
> > On Tue, Apr 22, 2008 at 7:24 PM, Filip Hanik - Dev Lists
> <devlists@hanik.com>
> > wrote:
> >
> >
> > > Henri Gomez wrote:
> > >
> > >
> > > > Hi to all,
> > > >
> > > > Did there is plans, ideas or interest around about OSGI-fing Tomcat ?
> > > >
> > > >
> > > >
> > > I've put a note about this a while ago in tomcat/trunk/PROPOSALS.txt
> > > my original plan was just to make sure all the MANIFEST.MF for each file
> > > would have enough in it so that each JAR can be a OSGi bundle.
> > >
> > > after that, one can add on as much or as little as one wishes
> > >
> > > Filip
> > >
> > >
> > > > Regards
> > > >
> > > > ---------------------------------------------------------------------
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> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
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> > >
> > >
> >
>
>
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