Samuli Elomaa wrote:
Hi,
Is there any otherway for two servlets in same tomcat to communicate
together except by http requests? Eg. could two servlets use somekind
of shared memory? or send signals to each other?
Hi,
whatever others suggested, just use the Servlet Spec 2.3+ standard:
The
Leon Rosenberg ha scritto:
Hmm... instead of using a 3-liner I'm supposed to plug in a whole
container, even a lightweight one? What will come next? Installing
Jboss for config-file-reading?
You know; i really liked singleton when I used to be a Swing programmer.
But it raises a serious
Hi,
Is there any otherway for two servlets in same tomcat to communicate
together except by http requests? Eg. could two servlets use somekind
of shared memory? or send signals to each other?
Samuli
-
To unsubscribe,
might help you.
Regards Thomas
-Original Message-
From: Samuli Elomaa [mailto:[EMAIL PROTECTED]
Sent: 3. maj 2006 09:57
To: Tomcat Users List
Subject: Servlet inter-communication
Hi,
Is there any otherway for two servlets in same tomcat to communicate
together except by http requests? Eg
Thomas Bolding ha scritto:
Indeed. If it is within the same context this is trivial - look into
singleton design pattern.
It's a bad idea to use singletons in a web application, especially when
the application needs to be reloaded (this is one of the causes that
make lots of people write
From: Samuli Elomaa [mailto:[EMAIL PROTECTED]
Is there any otherway for two servlets in same tomcat to communicate
together except by http requests? Eg. could two servlets use
somekind of shared memory? or send signals to each other?
Both could in theory rendezvous at a common filename.
Thanks,
Solved the problem by using singleton, hopefully I won't end up with
deadlock in somepoint.
Samuli
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
From: Samuli Elomaa [mailto:[EMAIL PROTECTED]
Is there any otherway for two servlets in same tomcat to communicate
together except by http requests? Eg. could two servlets use
somekind of shared memory? or send signals to each other?
Both could in theory rendezvous at a common filename.
How about JMS stuff ? For example Commons Messenger -
http://jakarta.apache.org/commons/sandbox/messenger/. Does anybody
used it ?
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
On 5/3/06, Antonio Petrelli [EMAIL PROTECTED] wrote:
Thomas Bolding ha scritto:
Indeed. If it is within the same context this is trivial - look into
singleton design pattern.
It's a bad idea to use singletons in a web application, especially when
the application needs to be reloaded (this is
From: Leon Rosenberg [mailto:[EMAIL PROTECTED]
Could you explain it a bit more? What's the difference whether I have
10 instances of the same class or just one for reloading?
In a Singleton:
- the class holds a reference to the classloader;
- the class holds a reference to the singleton
On 5/3/06, Peter Crowther [EMAIL PROTECTED] wrote:
From: Leon Rosenberg [mailto:[EMAIL PROTECTED]
Could you explain it a bit more? What's the difference whether I have
10 instances of the same class or just one for reloading?
In a Singleton:
- the class holds a reference to the classloader;
From: Leon Rosenberg [mailto:[EMAIL PROTECTED]
I mean reloading a webapp
in production environment is a greater nogo than using a singleton,
isn't it?
Given the number of posts in here about OOMEs over the last year or so
that have been traced down to running out of PermGen due to reloading
Maybe a useful URL to help address this matter when it bites, look for
the java code in the forum thread:
http://forum.hibernate.org/viewtopic.php?t=935948start=150
Something to put at the end of your
javax.servlet.ServletContextListener#contextDestroyed(ServletContextEvent).
Abstracting
On 5/3/06, Antonio Petrelli [EMAIL PROTECTED] wrote:
Leon Rosenberg ha scritto:
Even if it doesn't, is this a real problem? I mean reloading a webapp
in production environment is a greater nogo than using a singleton,
isn't it?
Yes it is! In our case we have an webapp update system that
On 5/3/06, Darryl Miles [EMAIL PROTECTED] wrote:
Maybe a useful URL to help address this matter when it bites, look for
the java code in the forum thread:
http://forum.hibernate.org/viewtopic.php?t=935948start=150
Something to put at the end of your
16 matches
Mail list logo
