if you just have 1 page with no back button support/all ajax then httpsessionstore is fine
johan On 9/10/07, Alex Objelean <[EMAIL PROTECTED]> wrote: > > > It is a intranet application, so the number of users for this application > is > at most ~30-40 users/day. A back button support is not needed, because > there > is a single page and also it doesn't make sense (since it is all ajax). > I'm still wondering, what is best in this case: > * Using HttpSessionStore > * Use 2nd level session store and make transient heavy object references. > > Alex. > > > > Martijn Dashorst wrote: > > > > The only caveat you'll have is whether or not the backbutton is > > supported long enough, and how many copies of that page you want to > > have in memory. > > > > If the non-2nd level cache way works for you, then there is absolutely > > nobody telling you to stop using it. The difference has mostly to do > > with providing backbutton support and optimizing memory usage. In your > > case it is probably best to limit the backbutton, as you claim to work > > a lot with ajax. So the back button functionality is probably already > > not working (users can press it, but they will leave your site, or go > > back to the login page). > > > > Profile the memory usage, multiply with the number of users you expect > > and ask if it still fits on the machine available for your budget. > > > > The second level cache will still keep the last rendered page in > > memory as I understand it, so that 32MB will still be claimed, > > whatever store you choose. > > > > Martijn > > > > On 9/10/07, Alex Objelean <[EMAIL PROTECTED]> wrote: > >> > >> :) Unfortunately it's not a joke, but I'm glad you're having fun :D. > >> Actually, this is result of worst case scenario simulation (I told you > >> that > >> there are heavy objects in the model). After making transient some of > the > >> fields, the size of the page dropped dramatically. > >> > >> Alex. > >> > >> > >> Johan Compagner wrote: > >> > > >> > you got to be kidding me...32MB???? > >> > really? Or is this a nice joke so in the middle of the day :) > >> > > >> > johan > >> > > >> > > >> > > >> > On 9/10/07, Alex Objelean <[EMAIL PROTECTED]> wrote: > >> >> > >> >> > >> >> It is about 32MB. Kind a big page :) > >> >> > >> >> > >> >> Matej Knopp-2 wrote: > >> >> > > >> >> > Turn on SecondLevelCacheSessionStore, and use FilePageStore as > >> >> > IPageStore (specified in session store constructor). Then go to > your > >> >> > tmp dir and you should be able to find the serialized pages there. > >> >> > > >> >> > -Matej > >> >> > > >> >> > On 9/10/07, Alex Objelean <[EMAIL PROTECTED]> wrote: > >> >> >> > >> >> >> How can I figure it out? > >> >> >> > >> >> >> > >> >> >> > >> >> >> > >> >> >> Johan Compagner wrote: > >> >> >> > > >> >> >> > if you save the page to disk how big is it? > >> >> >> > > >> >> >> > johan > >> >> >> > > >> >> >> > > >> >> >> > On 9/10/07, Alex Objelean <[EMAIL PROTECTED]> wrote: > >> >> >> >> > >> >> >> >> > >> >> >> >> Indeed, it is a very big component hierarchy (It contains at > >> least > >> >> 3 > >> >> >> >> levels > >> >> >> >> of nested AjaxTabbedPanel components). > >> >> >> >> The application is, in fact, a single page and it uses a lot > of > >> >> ajax > >> >> >> to > >> >> >> >> perform the updates. The model reflect the component hierarchy > >> >> >> >> (Appliction > >> >> >> >> has a single modelObject which nests another objects > >> corresponding > >> >> to > >> >> >> >> each > >> >> >> >> component). I do not have a lot of detaching logic, because it > >> is > >> >> >> >> important > >> >> >> >> to have all the data in the model (caching), also because the > >> >> services > >> >> >> >> are > >> >> >> >> very costly operations. > >> >> >> >> > >> >> >> >> If this description is not enough for replication, I will be > >> glad > >> >> to > >> >> >> help > >> >> >> >> by > >> >> >> >> giving you another details. > >> >> >> >> > >> >> >> >> Alex. > >> >> >> >> > >> >> >> >> > >> >> >> >> Martijn Dashorst wrote: > >> >> >> >> > > >> >> >> >> > How big is the page? Sounds like a really, really big > >> component > >> >> >> >> > hierarchy. Then it sounds reasonable that the httpsession > >> store > >> >> is > >> >> >> >> > much faster: it keeps it in ram, and doesn't use > serialization > >> >> until > >> >> >> >> > the session is serialized (server shutting down, deciding to > >> put > >> >> >> >> > session to disk or replication of session across cluster) > >> iirc. > >> >> >> >> > > >> >> >> >> > I think we would appreciate some way of replicating your > >> results. > >> >> I > >> >> >> >> > assume you can't share the actual code, but could you share > a > >> >> >> spin-off > >> >> >> >> > of the page's component structure and a Model that > replicates > >> the > >> >> >> data > >> >> >> >> > stuff's size (including the detach logic)? > >> >> >> >> > > >> >> >> >> > Martijn > >> >> >> >> > > >> >> >> >> > On 9/10/07, Alex Objelean <[EMAIL PROTECTED]> > wrote: > >> >> >> >> >> > >> >> >> >> >> If the pages wouldn't be serializable, it wouldn't work in > >> >> >> development > >> >> >> >> >> mode. > >> >> >> >> >> Is it right? > >> >> >> >> >> > >> >> >> >> >> I think that it is not necessarily about how large is > >> >> application, > >> >> >> in > >> >> >> >> my > >> >> >> >> >> case it is about how large is the model I'm working with > for > >> >> that > >> >> >> >> >> specific > >> >> >> >> >> request (ajax request). > >> >> >> >> >> > >> >> >> >> >> My action was: fetch a subview of a very large table > 300x300, > >> >> each > >> >> >> >> cell > >> >> >> >> >> has > >> >> >> >> >> a heavy model object. > >> >> >> >> >> > >> >> >> >> >> Alex. > >> >> >> >> >> > >> >> >> >> >> > >> >> >> >> >> Johan Compagner wrote: > >> >> >> >> >> > > >> >> >> >> >> > that looks very strange to me. We have also a very large > >> app > >> >> here > >> >> >> >> and > >> >> >> >> >> we > >> >> >> >> >> > dont notice a difference > >> >> >> >> >> > So i am very curious what is happening at your place > then. > >> Are > >> >> >> you > >> >> >> >> sure > >> >> >> >> >> > for > >> >> >> >> >> > example that the pages > >> >> >> >> >> > are serializable ? That we don't have constantly > >> exceptions? > >> >> >> >> >> > > >> >> >> >> >> > johan > >> >> >> >> >> > > >> >> >> >> >> > > >> >> >> >> >> > On 9/10/07, Alex Objelean <[EMAIL PROTECTED]> > >> wrote: > >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> >> Maybe the profiling was not a perfect one. But still, I > >> have > >> >> to > >> >> >> >> give > >> >> >> >> >> up > >> >> >> >> >> >> using > >> >> >> >> >> >> SecondSessionLevelStore just because the responsiveness > of > >> >> the > >> >> >> >> >> >> application > >> >> >> >> >> >> is very slow. > >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> >> Johan Compagner wrote: > >> >> >> >> >> >> > > >> >> >> >> >> >> > invocation count 1?? > >> >> >> >> >> >> > > >> >> >> >> >> >> > So you only do 1 request and you profile that? > >> >> >> >> >> >> > thats not a good test. You have to do plenty and > >> multiply > >> >> on > >> >> >> the > >> >> >> >> >> same > >> >> >> >> >> >> > time > >> >> >> >> >> >> > (10 for 100 request or something like that) > >> >> >> >> >> >> > to really see the difference. (and have a warm up > phase) > >> >> >> >> >> >> > > >> >> >> >> >> >> > johan > >> >> >> >> >> >> > > >> >> >> >> >> >> > > >> >> >> >> >> >> > > >> >> >> >> >> >> > On 9/10/07, Alex Objelean <[EMAIL PROTECTED]> > >> >> wrote: > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> Matej, I must disagree with you regarding performance > >> >> issues > >> >> >> of > >> >> >> >> the > >> >> >> >> >> >> >> SecondLevelSessionStore. I've reverted the > >> >> >> >> >> Application#newSessionStore > >> >> >> >> >> >> to > >> >> >> >> >> >> >> HttpSessionStore and this significantly improved the > >> >> >> application > >> >> >> >> >> >> overall > >> >> >> >> >> >> >> performance. Maybe this is not so obvious for small > >> >> >> >> applications, > >> >> >> >> >> but > >> >> >> >> >> >> >> when > >> >> >> >> >> >> >> it is about a large one - things changes. > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> Below, you will find attached two images. The first > one > >> is > >> >> a > >> >> >> >> >> profiling > >> >> >> >> >> >> of > >> >> >> >> >> >> >> an > >> >> >> >> >> >> >> action when working with HttpSessionStore, the second > >> one > >> >> is > >> >> >> a > >> >> >> >> >> >> profiling > >> >> >> >> >> >> >> for > >> >> >> >> >> >> >> the same action when using SecondSessionLevelStore. > The > >> >> >> >> difference > >> >> >> >> >> is > >> >> >> >> >> >> >> huge: > >> >> >> >> >> >> >> 593ms vs 174420ms. I cannot explain what exactly is > >> going > >> >> on, > >> >> >> >> but > >> >> >> >> >> I've > >> >> >> >> >> >> >> noticed that by switching from default > >> >> >> SecondLevelSessionStore > >> >> >> >> to > >> >> >> >> >> the > >> >> >> >> >> >> >> HttpSessionStore improved a lot the responsiveness of > >> the > >> >> >> >> >> application. > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> Alex. > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> http://www.nabble.com/file/p12588790/HttpSessionStore.jpg > >> >> >> >> >> >> >> > >> >> >> http://www.nabble.com/file/p12588790/SecondSessionLevelStore.jpg > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> Matej Knopp-2 wrote: > >> >> >> >> >> >> >> > > >> >> >> >> >> >> >> > You can revert to httpsessionstore by changing > >> >> >> >> >> >> >> > Application.newSessionStore method. But that's not > >> >> >> >> recommended. > >> >> >> >> >> What > >> >> >> >> >> >> >> > are your performance problems? I doubt it is caused > >> by > >> >> the > >> >> >> >> >> session > >> >> >> >> >> >> >> > store. > >> >> >> >> >> >> >> > > >> >> >> >> >> >> >> > -Matej > >> >> >> >> >> >> >> > > >> >> >> >> >> >> >> > On 9/7/07, jamieballing <[EMAIL PROTECTED]> > >> >> wrote: > >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> >> We are trying to do some performance > troubleshooting > >> >> and > >> >> >> want > >> >> >> >> to > >> >> >> >> >> >> >> disable > >> >> >> >> >> >> >> >> the > >> >> >> >> >> >> >> >> second level page cache. > >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> >> Is there any way to do this? > >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> >> Thanks, > >> >> >> >> >> >> >> >> Jamie > >> >> >> >> >> >> >> >> -- > >> >> >> >> >> >> >> >> View this message in context: > >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> > >> >> >> >> > >> >> >> > >> >> > >> > http://www.nabble.com/Disable-the-SecondLevelPageCache--tf4403977.html#a12563895 > >> >> >> >> >> >> >> >> Sent from the Wicket - User mailing list archive > at > >> >> >> >> Nabble.com > >> >> >> >> . > >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> > >> >> > --------------------------------------------------------------------- > >> >> >> >> >> >> >> >> To unsubscribe, e-mail: > >> >> >> [EMAIL PROTECTED] > >> >> >> >> >> >> >> >> For additional commands, e-mail: > >> >> >> [EMAIL PROTECTED] > >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > > >> >> >> >> >> >> >> > > >> >> >> >> >> >> > >> >> >> >> > >> >> > --------------------------------------------------------------------- > >> >> >> >> >> >> >> > To unsubscribe, e-mail: > >> >> [EMAIL PROTECTED] > >> >> >> >> >> >> >> > For additional commands, e-mail: > >> >> >> [EMAIL PROTECTED] > >> >> >> >> >> >> >> > > >> >> >> >> >> >> >> > > >> >> >> >> >> >> >> > > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> -- > >> >> >> >> >> >> >> View this message in context: > >> >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> > >> >> >> >> > >> >> >> > >> >> > >> > http://www.nabble.com/Disable-the-SecondLevelPageCache--tf4403977.html#a12588790 > >> >> >> >> >> >> >> Sent from the Wicket - User mailing list archive at > >> >> >> Nabble.com. > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> >> >> >> >> > >> >> >> > >> --------------------------------------------------------------------- > >> >> >> >> >> >> >> To unsubscribe, e-mail: > >> >> [EMAIL PROTECTED] > >> >> >> >> >> >> >> For additional commands, e-mail: > >> >> [EMAIL PROTECTED] > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> >> >> >> >> >> > > >> >> >> >> >> >> > > >> >> >> >> >> >> > >> >> >> >> >> >> -- > >> >> >> >> >> >> View this message in context: > >> >> >> >> >> >> > >> >> >> >> >> > >> >> >> >> > >> >> >> > >> >> > >> > http://www.nabble.com/Disable-the-SecondLevelPageCache--tf4403977.html#a12589190 > >> >> >> >> >> >> Sent from the Wicket - User mailing list archive at > >> >> Nabble.com > >> >> . > >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> > >> >> > --------------------------------------------------------------------- > >> >> >> >> >> >> To unsubscribe, e-mail: > >> [EMAIL PROTECTED] > >> >> >> >> >> >> For additional commands, e-mail: > >> [EMAIL PROTECTED] > >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> > > >> >> >> >> >> > > >> >> >> >> >> > >> >> >> >> >> -- > >> >> >> >> >> View this message in context: > >> >> >> >> >> > >> >> >> >> > >> >> >> > >> >> > >> > http://www.nabble.com/Disable-the-SecondLevelPageCache--tf4403977.html#a12589567 > >> >> >> >> >> Sent from the Wicket - User mailing list archive at > >> Nabble.com. > >> >> >> >> >> > >> >> >> >> >> > >> >> >> >> >> > >> >> >> > >> --------------------------------------------------------------------- > >> >> >> >> >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> >> >> >> >> For additional commands, e-mail: > [EMAIL PROTECTED] > >> >> >> >> >> > >> >> >> >> >> > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > -- > >> >> >> >> > Buy Wicket in Action: http://manning.com/dashorst > >> >> >> >> > Apache Wicket 1.3.0-beta3 is released > >> >> >> >> > Get it now: > >> >> http://www.apache.org/dyn/closer.cgi/wicket/1.3.0-beta3/ > >> >> >> >> > > >> >> >> >> > > >> >> >> > >> --------------------------------------------------------------------- > >> >> >> >> > To unsubscribe, e-mail: [EMAIL PROTECTED] > >> >> >> >> > For additional commands, e-mail: > [EMAIL PROTECTED] > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > >> >> >> >> -- > >> >> >> >> View this message in context: > >> >> >> >> > >> >> >> > >> >> > >> > http://www.nabble.com/Disable-the-SecondLevelPageCache--tf4403977.html#a12590414 > >> >> >> >> Sent from the Wicket - User mailing list archive at Nabble.com > . > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> >> > --------------------------------------------------------------------- > >> >> >> >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> >> >> >> For additional commands, e-mail: [EMAIL PROTECTED] > >> >> >> >> > >> >> >> >> > >> >> >> > > >> >> >> > > >> >> >> > >> >> >> -- > >> >> >> View this message in context: > >> >> >> > >> >> > >> > http://www.nabble.com/Disable-the-SecondLevelPageCache--tf4403977.html#a12590627 > >> >> >> Sent from the Wicket - User mailing list archive at Nabble.com. > >> >> >> > >> >> >> > >> >> >> > >> --------------------------------------------------------------------- > >> >> >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> >> >> For additional commands, e-mail: [EMAIL PROTECTED] > >> >> >> > >> >> >> > >> >> > > >> >> > > >> --------------------------------------------------------------------- > >> >> > To unsubscribe, e-mail: [EMAIL PROTECTED] > >> >> > For additional commands, e-mail: [EMAIL PROTECTED] > >> >> > > >> >> > > >> >> > > >> >> > >> >> -- > >> >> View this message in context: > >> >> > >> > http://www.nabble.com/Disable-the-SecondLevelPageCache--tf4403977.html#a12591276 > >> >> Sent from the Wicket - User mailing list archive at Nabble.com. > >> >> > >> >> > >> >> > --------------------------------------------------------------------- > >> >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> >> For additional commands, e-mail: [EMAIL PROTECTED] > >> >> > >> >> > >> > > >> > > >> > >> -- > >> View this message in context: > >> > http://www.nabble.com/Disable-the-SecondLevelPageCache--tf4403977.html#a12592522 > >> Sent from the Wicket - User mailing list archive at Nabble.com. > >> > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> For additional commands, e-mail: [EMAIL PROTECTED] > >> > >> > > > > > > -- > > Buy Wicket in Action: http://manning.com/dashorst > > Apache Wicket 1.3.0-beta3 is released > > Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0-beta3/ > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > -- > View this message in context: > http://www.nabble.com/Disable-the-SecondLevelPageCache--tf4403977.html#a12592818 > Sent from the Wicket - User mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
