anonymous wrote : | On a related note, "count" functionality is almost always an expensive operation - especially in highly scaleable systems. | | This is even true for RDBMS's, since often counts often have to be re-calculated each time (often by table scan), since maintaining counters for the table requires locking which is a barrier to scalability. |
Interesting. Table scans == bad. At least there we have the option of indexes. I wish I could do some work on putting indexes into the JBoss Messaging system. Maybe someday. Looking forward to hearing what you have to say about the consumer handling the message count... Best, Mark View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3938487#3938487 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3938487 ------------------------------------------------------- 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 _______________________________________________ JBoss-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jboss-user
