I think it would probably be better to cache it on a higher level. Every time you create a new WebMapServer, it contacts the server. If you are creating lots of WebMapServer objects that all represent the same server, then you are generating redundant calls to that server.
Re-using the same object will prevent this. And as far as I know, there are no downsides to doing it that way. (IE: The WebMapServer object does not retain much state - just the information about how it communicates with the server) Cheers, Richard Michel Jonker wrote: > > Hi Richard, > > Thanks for your answer. > Just to make sure that I understand you correctly: > It would be wisest to contruct a new WebMapServer in every service > method (servlet thread) and not to try to gain performance (caching it) > by making it available on a higher level (application context, instance > variable, static :-P ..... ) ? Or would that come with a large penalty ? > > Thanks again ! > > Michel Jonker > > > > > *Richard Gould <[EMAIL PROTECTED]>* > > 07/11/2006 09:51 PM > > > To > Michel Jonker <[EMAIL PROTECTED]> > cc > Jody Garnett <[EMAIL PROTECTED]>, > [email protected] > Subject > Re: [Geotools-gt2-users] Question about multithreading, serverside use > of WMS client code > > > > > > > > > Hi Michel, > > I designed the WMS client so that the application using it can use its > own method of threading, rather than having the module impose one > itself. So the entire WMS module is single-threaded, but you should be > able to use it in a multi-threaded context. > > The important parts where it performs I/O are in the constructor, when > it talks to the server initially, and during all of the issueRequest() > methods. If you need to change some of this behaviour, please let me > know and I will work with you to sort it out. > > Cheers, > > Richard > > Jody Garnett wrote: > > Michel Jonker wrote: > >> Hello, > >> > >> I am new to this toolkit and I have design decission to make. > >> > >> I want to start of with this sample : > >> http://geotools.codehaus.org/Web+Map+Server+Tutorial > >> > >> And put this code in the service methode of a servlet/portlet and not > >> in a desktop client application. > > That is cool, you will find the WMS specification often used in server > > applications (for reporting) or in web applications > > such as MapBuilder. > >> We are trying to achieve a multi-tier solution where the WMS service > >> is being consumed by a Portal Server. > >> > >> Question: with servlets/portlet you introduce multithreading, are > >> there any limitations/pitfalls that I should be aware off if I want to > >> start using this component ? > > It is a straight up webservice, standard base so you can switch between > > MapServer and GeoServer as needed (performance vs advanced styling) > >> Or should I have read more and is it actually designed for the > >> purposes that I have stated above ? > > I think you are set, you should be able to access a wide range of > content. > > > > > > Have fun, > > Jody > > > > > > > > ------------------------------------------------------------------------- > > Using Tomcat but need to do more? Need to support web services, security? > > Get stuff done quickly with pre-integrated technology to make your > job easier > > Download IBM WebSphere Application Server v.1.0.1 based on Apache > Geronimo > > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > > _______________________________________________ > > Geotools-gt2-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > > > > > De informatie in dit e-mailbericht (inclusief aanhangsels) is > vertrouwelijk en is alleen bestemd voor de beoogde ontvanger(s). Indien > u dit bericht onterecht heeft ontvangen, wordt u verzocht het bericht te > retourneren en de ontvangen informatie op geen enkele wijze te gebruiken. > > The information contained in this e-mail (attachments included) may be > confidential and is intended solely for the person(s) indicated in the > message. Should you have received this e-mail unintentionally, please > return it to the sender and do not use the content of the message in any > way. ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
