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From Glenn Golden <ggol...@umich.edu>
Subject RE: cvs commit: jakarta-jetspeed/webapp/WEB-INF/conf JetspeedReso urces.properties
Date Thu, 19 Sep 2002 13:37:24 GMT
It would be cool to invent (or adopt) a communications channel between
different jetspeeds running on different machines - then, when one gets a
change to the psml and saves it, it could tell the others, and they could
get the update right away from the db!

- Glenn

> -----Original Message-----
> From: David Sean Taylor [mailto:david.sean.taylor@bbc.co.uk] 
> Sent: Thursday, September 19, 2002 9:21 AM
> To: 'Jetspeed Developers List'
> Subject: RE: cvs commit: jakarta-jetspeed/webapp/WEB-INF/conf 
> JetspeedReso urces.properties
> 
> 
> Yes, that's what I was thinking. This approach takes less resources (I
> think) and guarantees freshness.
> That said I may try falling back to 1 or 2 minutes
> 
> > -----Original Message-----
> > From: Glenn Golden [mailto:ggolden@umich.edu]
> > Sent: 19 September 2002 14:19
> > To: 'Jetspeed Developers List'
> > Subject: RE: cvs commit: jakarta-jetspeed/webapp/WEB-INF/conf 
> > JetspeedReso urces.properties
> > 
> > 
> > How about running the refresher every minute?  Is that too
> > long a delay?  Is that too much overhead, so it cancles out 
> > the caching benefits?
> > 
> > 
> > > -----Original Message-----
> > > From: David Sean Taylor [mailto:david.sean.taylor@bbc.co.uk]
> > > Sent: Thursday, September 19, 2002 8:41 AM
> > > To: 'Jetspeed Developers List'
> > > Subject: RE: cvs commit: jakarta-jetspeed/webapp/WEB-INF/conf
> > > JetspeedReso urces.properties
> > > 
> > > 
> > > 
> > > Machine updates resource A.
> > > Machine B doesn't get update until refresher is ran which was too 
> > > late.
> > > 
> > > 
> > > 
> > > > -----Original Message-----
> > > > From: Glenn Golden [mailto:ggolden@umich.edu]
> > > > Sent: 19 September 2002 13:27
> > > > To: 'Jetspeed Developers List'
> > > > Subject: RE: cvs commit: jakarta-jetspeed/webapp/WEB-INF/conf
> > > > JetspeedReso urces.properties
> > > > 
> > > > 
> > > > David -
> > > > 
> > > > What's wrong with the caching in a distributed env. With
> > the db psml
> > > > manager?
> > > > 
> > > > If machine A creates a psml, it goes right to the
> > database, and if a
> > > > user comes to machine B with a profile that would pick that, it
> > > > would find it - unless it's been cached as missing on 
> B... So you 
> > > > could run the refresher more often... And B would see 
> the page a 
> > > > little later than it's been created...
> > > > 
> > > > Is this the case you are running into?  Are there others?
> > > > 
> > > > Thanks.
> > > > 
> > > > - Glenn
> > > > 
> > > > > -----Original Message-----
> > > > > From: taylor@apache.org [mailto:taylor@apache.org]
> > > > > Sent: Wednesday, September 18, 2002 9:24 PM
> > > > > To: jakarta-jetspeed-cvs@apache.org
> > > > > Subject: cvs commit: jakarta-jetspeed/webapp/WEB-INF/conf
> > > > > JetspeedResources.properties
> > > > > 
> > > > > 
> > > > > taylor      2002/09/18 18:24:13
> > > > > 
> > > > >   Modified:    
> > > src/java/org/apache/jetspeed/modules/actions/portlets
> > > > >                         PsmlBrowseAction.java
> > > > >                
> > > src/java/org/apache/jetspeed/services/psmlmanager/db
> > > > >                         DatabasePsmlManagerService.java
> > > > >                webapp/WEB-INF/conf 
> JetspeedResources.properties
> > > > >   Log:
> > > > >   Added PsmlManager.caching-on property to Jrp. It is used by 
> > > > > DatabasePsmlManagerService to enable caching.
> > > > >   Removed code to read in data for psml browser from the 
> > > > > session, as this action is not tied into the 
> creation/deletion 
> > > > > of roles/users etc. Hence the psml entries are invalid in the 
> > > > > earlier stated circumstances. Now this action 
> executes the query 
> > > > > each time buildNormalContext
> > is called.
> > > > >   
> > > > 
> > > > --
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> > > 
> > > 
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> BBCi at http://www.bbc.co.uk/
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> not use, copy or disclose the information in any way nor act in 
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