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From Karl Kildén <karl.kil...@gmail.com>
Subject Re: measure session size?
Date Wed, 04 Feb 2015 20:24:07 GMT
Hi,

Not sure I understand how delta size is related or unrelated to session
data. What will cause data to be delta or not? And Not every strategy uses
delta session right?

I will get the production environment and the test environment copy soon so
I will do some real tests.

On 4 February 2015 at 20:36, Romain Manni-Bucau <rmannibucau@gmail.com>
wrote:

> after all this effort you'll maybe be disappointed. For clustering (in
> particular tomcat one) what is important is not session size but delta
> size and throughoutput. typically if your session does 10M but only
> 200b are moving between nodes once a user is conencted for instance
> this is fine. About 1.5K then it depends as usual of your contraints
> and infra. Best way to know is to measure performances and "cost"
> (cloud network is not always free for instance). Once you have it you
> can compare it to what you would like / what you can accept. There is
> no general rule sadly
>
>
> Romain Manni-Bucau
> @rmannibucau
> http://www.tomitribe.com
> http://rmannibucau.wordpress.com
> https://github.com/rmannibucau
>
>
> 2015-02-04 20:31 GMT+01:00 Karl Kildén <karl.kilden@gmail.com>:
> > OK so I did
> >
> > grant codeBase "file:${catalina.home}/webapps/myapp/-" {
> >         permission java.security.AllPermission;
> >
> > };
> >
> >
> > https://gist.github.com/karlkilden/51233a012071a8f82c26
> >
> > It works... Thanks - I was not very comfortable editing the security
> policy
> > then again we do hosting and one app per TomEE so it hardly matters
> anyway.
> >
> > My session size seems to be 1.5KB I wonder if that's to large for a
> > clustering setup? I think I will use the JDBC storage one for clustering
> > and use sticky sessions
> >
> > cheers
> >
> > On 4 February 2015 at 20:01, Romain Manni-Bucau <rmannibucau@gmail.com>
> > wrote:
> >
> >> sure
> >>
> >>
> >> Romain Manni-Bucau
> >> @rmannibucau
> >> http://www.tomitribe.com
> >> http://rmannibucau.wordpress.com
> >> https://github.com/rmannibucau
> >>
> >>
> >> 2015-02-04 19:59 GMT+01:00  <karl.kilden@gmail.com>:
> >> > Tried it, tomcat kills the thread and logs a security something
> >> exception. Guess i would need to turn off security manager
> >> >
> >> > Skickat från min iPhone
> >> >
> >> >> 4 feb 2015 kl. 19:52 skrev Romain Manni-Bucau <rmannibucau@gmail.com
> >:
> >> >>
> >> >> @Karl: if you didnt wrap it just use session fielf of the session you
> >> >> get (by reflection). Should be serializable
> >> >>
> >> >>
> >> >> Romain Manni-Bucau
> >> >> @rmannibucau
> >> >> http://www.tomitribe.com
> >> >> http://rmannibucau.wordpress.com
> >> >> https://github.com/rmannibucau
> >> >>
> >> >>
> >> >> 2015-02-04 19:49 GMT+01:00  <karl.kilden@gmail.com>:
> >> >>> Hello Mark, httpsession does not implement Serializable and tomcat
> >> sessionholder does not. The actual session is not obtainable :(
> >> >>>
> >> >>> Skickat från min iPhone
> >> >>>
> >> >>>> 4 feb 2015 kl. 16:52 skrev Mark Struberg <struberg@yahoo.de>:
> >> >>>>
> >> >>>> did that via a SerlvetFilter and just serialized the session
into a
> >> byte[] and output the size. As benefit you also see early on whether you
> >> have something which is not properly Serializable and would fail on a
> >> cluster.
> >> >>>>
> >> >>>> LieGrue,
> >> >>>> strub
> >> >>>>
> >> >>>>
> >> >>>>
> >> >>>>
> >> >>>>
> >> >>>>>> On Monday, 2 February 2015, 20:01, Karl Kildén <
> >> karl.kilden@gmail.com> wrote:
> >> >>>>>> Hello!
> >> >>>>>
> >> >>>>> Anyone got some ideas on how to measure session size?
> >> >>>>>
> >> >>>>> I serialized the JSF sessionmap and it gave some hints
but seems
> not
> >> >>>>> everything is there. If I CDI scope with Session and put
a lot of
> >> stuff in
> >> >>>>> my bean the JSF map does not grow and I can't figure out
how to
> >> serialize
> >> >>>>> the session manually...
> >> >>>>>
> >> >>>>> If anyone knows exactly how viewstate and sessionstate
is stored
> for
> >> a
> >> >>>>> modern CDI/JSF application I would be glad to hear about
some
> >> internals.
> >> >>>>>
> >> >>>>> I have no issues - just want to know this so I can keep
tabs as my
> >> app grows
> >> >>>>>
> >> >>>>> cheers
> >> >>>>>
> >>
>

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