Hi again
a related question. if I load up the data I need from within a plug in
and store it in the application scope, is this an acceptable
sepatation of view and Model as long as I am doing so from a
service?
Remember, this app architecture I'm using has a service factory
(which was set up
I agree: caching should be transparent to your code.
Using iBATIS, you can make your entire DAO layer behave that way -
each SQL statement can be cached independently, or they can be grouped
as appropriate.
That is the approach I use. I make my action classes always go to my
service layer to get
how do you manage cross container caches if you are clustered - when
you are using static members on classes? How do guarantee sameness on
different physical machines? We do have a few caches in our
application and are facing issues due to this design or an improperly
implemented version of
Without contesting the good points. I would say memory is cheap. For
an application i worked on, we had about 6 different applications
sitting on two 4 by 16 machines. The -xmx arguments of all apps put
together came up to about 10 gigs RAM and the rest was left open. i
dont think serious
Caching or not is also a decision that you sometimes want to change
after you see your application used in anger for a while. I like to
provide a getter method on some application scoped bean that returns
things like this, so I can change my decision to implement caching (or
not), for any given
-Original Message-
From: Craig McClanahan [mailto:[EMAIL PROTECTED]
Sent: Monday, February 14, 2005 4:43 PM
To: Leon Rosenberg
Cc: Struts Users Mailing List
Subject: [SPAM] - Re: Caching Appliction Level Data? (session listener)
- Email has different SMTP TO: and MIME TO: fields in the email
On Tue, 15 Feb 2005 15:53:15 -0500, Manuchehar Khan
[EMAIL PROTECTED] wrote:
!DOCTYPE web-app PUBLIC -//Sun Microsystems, Inc.//DTD Web Application
2.2//EN http://java.sun.com/j2ee/dtds/web-app_2_2.dtd;
This is the problem ... the listener element was added in Servlet
2.3, so you need to use
Thanks it works now . We are using 2.3.
-Original Message-
From: Craig McClanahan [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 15, 2005 3:58 PM
To: Manuchehar Khan
Cc: Struts Users Mailing List
Subject: Re: [SPAM] - Re: Caching Appliction Level Data? (session
listener) - Email has
Hi All
I have a need in an app I'm working on to cache data that is valid and
shared across users, like standard country codes, region codes,
industry codes... stuff like that.
What's the best way to do that with my struts 1.2 application? Is
there something built in that I'm not aware of that I
From: David Johnson [EMAIL PROTECTED]
I have a need in an app I'm working on to cache data that is valid and
shared across users, like standard country codes, region codes,
industry codes... stuff like that.
What's the best way to do that with my struts 1.2 application? Is
there something
I use the same strategy often. Another option (besides a
ServletContextListener) for loading your application scope attributes is
a Struts PlugIn.
Erik
Wendy Smoak wrote:
From: David Johnson [EMAIL PROTECTED]
I have a need in an app I'm working on to cache data that is valid and
shared
Ahhh a little more information on using a Struts plugin? I'm such a
noobie I've never done this.. anywhere you can point me for examples?
UGH!
Sorry for the simpleton question
On Mon, 14 Feb 2005 13:26:12 -0500, Erik Weber [EMAIL PROTECTED] wrote:
I use the same strategy often. Another option
http://struts.apache.org/userGuide/building_controller.html#plugin_classes
Just set your application scope attributes in the init method.
An example of a custom PlugIn that is often used by Struts developers is
the Validator PlugIn, so you'll also learn a little about the mechanism
if you read
A PlugIn works nicely as well. I am not sure which is the recommended
Struts practice.
--- Wendy Smoak [EMAIL PROTECTED] wrote:
From: David Johnson [EMAIL PROTECTED]
I have a need in an app I'm working on to cache data that is valid and
shared across users, like standard country codes,
Ah!
After reading up on the Struts Plugins, I have the following question
Are struts plugins a perfectly acceptable way to handle Application
level caching? How about best practices-wise?
Thoughts?
D
On Mon, 14 Feb 2005 11:03:24 -0800 (PST), Martin Wegner
[EMAIL PROTECTED] wrote:
A PlugIn
On Mon, 14 Feb 2005 11:03:24 -0800 (PST), Martin Wegner
[EMAIL PROTECTED] wrote:
A PlugIn works nicely as well. I am not sure which is the recommended
Struts practice.
If you're on a Servlet 2.3 or later container (which is when
ServletContextListener was introduced), you should use it
Using a plugin only tells you WHERE your going to read the information in,
not where your going to STORE it. I think that's the question you really
want to ask. Plugins are pretty standard practice when dealing with
Struts, but if you have a concern that you might not be using Struts at
some
I see your points. We arent sure yet what version of Weblogic we'll be
deploying to, but I'm developing in Tomcat. Sounds like an open
question to me.
Where would you point me to learn how to do this the ContextListener way?
On Mon, 14 Feb 2005 11:10:19 -0800, Craig McClanahan [EMAIL
Another question
Currently, I'm modifying an alplication that HAS a struts plug-in for
creating Application wide stuff... the thing I want to create will
depend on that stuff already being there, so would it be safe to
assume that it will exist if I simply implement a vanilla
ContextListener
Caching DATA in a view (Servlet) is a bad practice.
Best practice is to use DAO,
A DAO does caching for you! It has fine grain control of how, when to
flush, what size... all with no or minimal coding.
Data caching ...in Data Layer.
.V
David Johnson wrote:
Hi All
I have a need in an app I'm
Frank
I see what you mean. I was assuming I'd just store the data in a
hashtable or something in the Application Context
I have stupid question...where is your AppConfig actually getting
stored? I'd think you'd need to do the above at some point and do a
getServletContext().setAttribute(
Ugh, that of course also sounds logical.
how would you do this, then?
Imagine you have a list of state codes (to keep it simple) that you
want to share across Sessions (imagine that's a really long list and
you dont want each session having a copy)
one more thing, I also have a service factory
David Johnson wrote the following on 2/14/2005 12:54 PM:
I have a need in an app I'm working on to cache data that is valid and
shared across users, like standard country codes, region codes,
industry codes... stuff like that.
Everyone has given you good suggestions, but I still think you should
Frank,
I think I get it. Static classes I get, but I guess I didnt consider
that any static member of a static class is always accessible. It
still strains my brain a little, actually, but I guess it makes sense.
so you'd recommend this above creating some hashtable and just
plunking it in
I love the sound of that product, but given the time contstraints I'm
not sure I can take on learning something new and get the thing in
place on time.
The other thing is that while I'm using the example of country codes,
there are in fact some things that will be quite large for example a
list
On Mon, February 14, 2005 2:53 pm, David Johnson said:
I think I get it. Static classes I get, but I guess I didnt consider
that any static member of a static class is always accessible. It
still strains my brain a little, actually, but I guess it makes sense.
Yeah, static is one of those
David Johnson wrote the following on 2/14/2005 2:59 PM:
I love the sound of that product, but given the time contstraints I'm
not sure I can take on learning something new and get the thing in
place on time.
Oh I understand. I wasn't really suggesting to learn a new product. I
just meant that if
how do you manage cross container caches if you are clustered - when
you are using static members on classes? How do guarantee sameness on
different physical machines? We do have a few caches in our
application and are facing issues due to this design or an improperly
implemented version of this
and InvalidateLovInterceptor.java
- Original Message -
From: Soaring Eagle [EMAIL PROTECTED]
To: Struts Users Mailing List user@struts.apache.org
Subject: Re: Caching Appliction Level Data?
Date: Mon, 14 Feb 2005 15:54:54 -0500
how do you manage cross container caches if you are clustered - when
you
* There are also other listeners that you should
explore which are available in this version -- did
you know, for example, that you can be notified
whenever anyone else in your app adds, removes,
or replaces an application or session scope attribute?
(In Servlet 2.4 you can do
* There are also other listeners that you should
explore which are available in this version -- did
you know, for example, that you can be notified
whenever anyone else in your app adds, removes,
or replaces an application or session scope attribute?
(In Servlet 2.4 you can do
HttpSessionBindingListener only works on an attribute itself (so you
can tell when you get added or removd) -- it's been around since
Servlet 2.0. I was referring to HttpSessionListener (tells you about
session creations and deletions) and HttpSessionAttributeListener
(tells you about attribute
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