Re: how to implement "READ MOSTLY" CACHE

Hi Pedro,

I don't think there is a "Read Mostly" cache for JBoss.  I am using Weblogic
8.1 and they have a "ReadOnly" feature that provides a cluster-wide cache.
For JBoss, you can use the Seppuku pattern
(http://dima.dhs.org/misc/readOnlyUpdates.html). However, read-only pattern
is difficult to implement if you have other applications that update the
same database at the same time.  For those who use read-only patterns, how
do you invalidate the cache if some external systems update the database?
Do you use database triggers?

Hopes this help,

Vincent

-----Original Message-----
From: Pedro Salazar [mailto:[email protected]]
Sent: Friday, November 14, 2003 7:54 PM
To: [email protected]
Subject: how to implement "READ MOSTLY" CACHE


Greetings,

I'm using XDOCLET to generate my EJB descriptors and I would like to
know how can I define a polite of "read mostly" cache for my entity
beans?

I now that I should have my entity beans mapped as xxxRO and xxxRW.
However, I don't know if I have to *duplicate* my beans java classes,
and I don't know also how to define the commit isolation level for my
entity beans (CMP).

Any hints would be very appreciated :-)

I'm using JBOSS...

regards,
Pedro.
--
PS
[email protected]
PGP:0E129E31D803BC61

===========================================================================
To unsubscribe, send email to [email protected] and include in the body
of the message "signoff EJB-INTEREST".  For general help, send email to
[email protected] and include in the body of the message "help".

===========================================================================
To unsubscribe, send email to [email protected] and include in the body
of the message "signoff EJB-INTEREST".  For general help, send email to
[email protected] and include in the body of the message "help".