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Posted to users@wicket.apache.org by kshitiz <k....@gmail.com> on 2012/08/02 15:25:58 UTC
Need suggestion on minimizing session usage in wicket web
application
Hi,
I need some suggestions. In my wicket application (in development phase), I
have used normal forms and links. While going through the concept of
stateless pages and forms, I am confused about converting the forms and
components to stateless. Will it really minimize session usage in the
system. I need to minimize it as i wont be having much server space
initially.
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Re: Need suggestion on minimizing session usage in wicket web application
Posted by Bertrand Guay-Paquet <be...@step.polymtl.ca>.
Do you use Wicket 6? If so, the latest snapshot includes an "enhanced"
page view in the page inspector of the Wicket debug bar. This page view
can be filtered to show only stateful components and behaviors.
If you're on Wicket 1.5, check out
https://issues.apache.org/jira/browse/WICKET-4244.
"stateful_page_inspector.patch" has the version I submitted for 1.5 in
November. You can have a look at the screenshots in the issue to see
what it does.
On 03/08/2012 10:44 AM, kshitiz wrote:
> Ya..that worked...and for each component...I think statelessChecker is there.
> But I am not able to figure out how to use it for a component? I read you
> post
> http://apache-wicket.1842946.n4.nabble.com/Why-is-stateless-from-making-my-page-stateful-td3662059.html
> http://apache-wicket.1842946.n4.nabble.com/Why-is-stateless-from-making-my-page-stateful-td3662059.html
> But not able to get...
>
>
>
> --
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Re: Need suggestion on minimizing session usage in wicket web
application
Posted by kshitiz <k....@gmail.com>.
Ya..that worked...and for each component...I think statelessChecker is there.
But I am not able to figure out how to use it for a component? I read you
post
http://apache-wicket.1842946.n4.nabble.com/Why-is-stateless-from-making-my-page-stateful-td3662059.html
http://apache-wicket.1842946.n4.nabble.com/Why-is-stateless-from-making-my-page-stateful-td3662059.html
But not able to get...
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Re: Need suggestion on minimizing session usage in wicket web application
Posted by Martin Grigorov <mg...@apache.org>.
On Fri, Aug 3, 2012 at 5:11 PM, kshitiz <k....@gmail.com> wrote:
> Actually I am planning to host the app in Google application engine. One
> thing I am not able to understand, getStatelessHint() if applied in the
> constructor of a page should return whether that page is stateless or not.
> So, in my page which is full of ajax and statefull components, why it is
> printing true? I am simply printing...
>
> public Page(PageParameters pageParameters)(
> final PageParameters pageParameters, UserDomain userDomain,
> UserDomain loggedInUserDomain) {
>
> // many statefull components added
> *System.out.println(this.getStatelessHint());* returning true..!!!!
use #isPageStateless() instead.
> }
>
>
>
> --
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Re: Need suggestion on minimizing session usage in wicket web
application
Posted by kshitiz <k....@gmail.com>.
Actually I am planning to host the app in Google application engine. One
thing I am not able to understand, getStatelessHint() if applied in the
constructor of a page should return whether that page is stateless or not.
So, in my page which is full of ajax and statefull components, why it is
printing true? I am simply printing...
public Page(PageParameters pageParameters)(
final PageParameters pageParameters, UserDomain userDomain,
UserDomain loggedInUserDomain) {
// many statefull components added
*System.out.println(this.getStatelessHint());* returning true..!!!!
}
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Re: Need suggestion on minimizing session usage in wicket web application
Posted by Bertrand Guay-Paquet <be...@step.polymtl.ca>.
I have not used stateless ajax myself so I can't help you much there.
Have a look here for stateless ajax:
https://github.com/jolira/wicket-stateless
Also, before you make such big modifications, I suggest you take the
time to profile the memory usage of your pages. There could be a 1-hour
fix available to your problem depending on its source.
On 03/08/2012 2:48 AM, kshitiz wrote:
> Okk....I think for large user base, I should go for stateless pages. But the
> problem is that my app is entirely ajax based. So, how would I use ajax
> behavior for stateless components. As far as I have read, ajax requires
> components to be stateful
> (/http://apache-wicket.1842946.n4.nabble.com/stateless-ajax-behavior-td1933611.html/).
> Will it be possible for me to use same ajax behavior like updating panel,
> etc on stateless pages?
>
>
>
> --
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Re: Need suggestion on minimizing session usage in wicket web
application
Posted by kshitiz <k....@gmail.com>.
Okk....I think for large user base, I should go for stateless pages. But the
problem is that my app is entirely ajax based. So, how would I use ajax
behavior for stateless components. As far as I have read, ajax requires
components to be stateful
(/http://apache-wicket.1842946.n4.nabble.com/stateless-ajax-behavior-td1933611.html/).
Will it be possible for me to use same ajax behavior like updating panel,
etc on stateless pages?
--
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Re: Need suggestion on minimizing session usage in wicket web application
Posted by Bertrand Guay-Paquet <be...@step.polymtl.ca>.
I would say it depends. Generally, it should help to use detachable
models, but for very small objects (like static strings), it's won't
give a big gain. Besides memory gains, detachable models also reload
their data each request which ensures non-stale objects.
On 02/08/2012 11:28 AM, kshitiz wrote:
> Thanks for the links. One thing that I want to ask that do yo think we should
> use LoadableDetachable models to minimize session usage? Like for every
> thing examples labels, links, dropdowns, etc.
>
>
>
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Re: Need suggestion on minimizing session usage in wicket web
application
Posted by kshitiz <k....@gmail.com>.
Thanks for the links. One thing that I want to ask that do yo think we should
use LoadableDetachable models to minimize session usage? Like for every
thing examples labels, links, dropdowns, etc.
--
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Re: Need suggestion on minimizing session usage in wicket web application
Posted by Bertrand Guay-Paquet <be...@step.polymtl.ca>.
Hi,
You can read the following email thread for insight:
http://wicket-users.markmail.org/thread/6qqc4pxt77mulpmt
Also have a look at this:
http://www.small-improvements.com/blog/technical/tuning-wicket-session-size
These links talk about session size in general, not only about stateless
components.
On 02/08/2012 9:25 AM, kshitiz wrote:
> Hi,
>
> I need some suggestions. In my wicket application (in development phase), I
> have used normal forms and links. While going through the concept of
> stateless pages and forms, I am confused about converting the forms and
> components to stateless. Will it really minimize session usage in the
> system. I need to minimize it as i wont be having much server space
> initially.
>
>
>
> --
> View this message in context: http://apache-wicket.1842946.n4.nabble.com/Need-suggestion-on-minimizing-session-usage-in-wicket-web-application-tp4650956.html
> Sent from the Users forum mailing list archive at Nabble.com.
>
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Re: Need suggestion on minimizing session usage in wicket web application
Posted by Andrea Del Bene <an...@gmail.com>.
yes, using stateless pages when it's possible will definitely reduce
your session size. Wicket offers a stateless version for those
components which by default have a stateful nature, like forms and
links. As general rule you can implement a stateless page when the page
doesn't need to keep its internal state between two consecutive
requests. For more information on stateless pages see live examples at
http://www.wicket-library.com/wicket-examples/stateless/
> Hi,
>
> I need some suggestions. In my wicket application (in development phase), I
> have used normal forms and links. While going through the concept of
> stateless pages and forms, I am confused about converting the forms and
> components to stateless. Will it really minimize session usage in the
> system. I need to minimize it as i wont be having much server space
> initially.
>
>
>
> --
> View this message in context: http://apache-wicket.1842946.n4.nabble.com/Need-suggestion-on-minimizing-session-usage-in-wicket-web-application-tp4650956.html
> Sent from the Users forum mailing list archive at Nabble.com.
>
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Re: Need suggestion on minimizing session usage in wicket web application
Posted by Martin Grigorov <mg...@apache.org>.
On Thu, Aug 2, 2012 at 11:37 PM, robmcguinness
<ro...@gmail.com> wrote:
>
> food for though in 6.0 branch
>
>
>
> getFrameworkSettings().setSerializer(new
> DeflatedJavaSerializer(getApplicationKey()));
This wont help for the session size. The http session keeps only the
last used page instance. The serialized page (the bytes) are stored in
disk store unless you use HttpSessionDataStore (for Google AppEngine
for example).
Read https://cwiki.apache.org/confluence/display/WICKET/Page+Storage
>
>
>
>
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Re: Need suggestion on minimizing session usage in wicket web
application
Posted by robmcguinness <ro...@gmail.com>.
food for though in 6.0 branch
getFrameworkSettings().setSerializer(new
DeflatedJavaSerializer(getApplicationKey()));
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