java - Can a WebLogic Singleton Service be used for wait/notify? -

-

we have app maintains hashmap in memory keyed specific user ids , had values representing system events. basic functionality user makes request web server checks hashmap events keyed id otherwise waits short amount of time on hashmap until either time out or notify executed on hashmap wakes client , processes event.

this working fine in single server environment moving clustered environment , unsure of best way handle particular piece.

thinking need utilize database queue these events , lose instant callback effect wait/notify unless possible somehow achieve using singelton service feature. using singleton service able wait on object 1 server , notified thread on other server in cluster?

i suggest use jms that. jms cluster-friendly , can configured persist events either in file storage or database. can select 2 models: queue or topic depending on how users need handled.


Comments

Post a Comment

Popular posts from this blog

ios - UICollectionView Self Sizing Cells with Auto Layout -

-
Image
i'm trying self sizing uicollectionviewcells working auto layout, can't seem cells size content. i'm having trouble understanding how cell's size updated contents of what's inside cell's contentview. here's setup i've tried: custom uicollectionviewcell uitextview in contentview. scrolling uitextview disabled. the contentview's horizontal constraint is: "h:|[_textview(320)]", i.e. uitextview pinned left of cell explicit width of 320. the contentview's vertical constraint is: "v:|-0-[_textview]", i.e. uitextview pinned top of cell. the uitextview has height constraint set constant uitextview reports fit text. here's looks cell background set red, , uitextview background set blue: i put project i've been playing on github here . updated ios 9 after seeing github solution break under ios 9 got time investigate issue fully. have updated repo include several examples of different configurations s...
Read more

DOM Manipulation in Wordpress (and elsewhere) using php -

-
DOM Manipulation in Wordpress (and elsewhere) using php - i'm quite new dom manipulation world , head start in order avoid mutual errors. i looking efficient way manipulate content generated wordpress using php. @ moment using simple html dom seems work fine. found domdocument , few others , helpfull if cleared out 1 faster, improve or @ to the lowest degree generate less errors in case of bad markup. also on side can explain syntax (instead of $html @$html) thank much php wordpress domdocument simple-html-dom
Read more

asp.net - Passing parameter to telerik popup -

-
is there way pass parameter telerik similar window.showmodaldialog the way call window.showmodaldialog : window.showmodaldialog(pagename, myargs, 'status:no;dialoghide=true;help:no') myargs parameter passing popup try likes , <script type="text/javascript"> function openradwin(myargs) { radopen("yourpagename.aspx?parameter=" + myargs , "radwindow1"); } </script> <telerik:radwindowmanager id="radwindowmanager1" runat="server" enableshadow="true" visiblestatusbar="false"> <windows> <telerik:radwindow id="radwindow1" runat="server" showcontentduringload="false" width="400px" height="400px" title="telerik radwindow" behaviors="default"> </telerik:radwindow> </windows> </telerik:radwindowmanager> and , @ page_load of...
Read more