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Jacques Le Roux edited comment on OFBIZ-2353 at 9/2/14 7:39 AM: ---------------------------------------------------------------- == TYPOs == Haaa, I understand now what Adrian want's to achieve. He does not want to depend on the DBMS (waiting for the lock). So his algorithm is a tentative to be independent of it and guarantee that in all case he has the control. Are there known patterns like that in code literature? was (Author: jacques.le.roux): Haaa, I understand now what Adrian want's to achieve. He does not want to depend on the DBMS (waiting for the lock). So it's algorithm is a tentative to be independent of it and guarantee that in all case he has the control. Are there known patterns like that in code literature? > SequenceUtil may generate duplicate IDs in Load Balancing mode > --------------------------------------------------------------- > > Key: OFBIZ-2353 > URL: https://issues.apache.org/jira/browse/OFBIZ-2353 > Project: OFBiz > Issue Type: Bug > Components: framework > Affects Versions: Release Branch 4.0, Release Branch 09.04, Trunk > Reporter: Philippe Mouawad > Assignee: Jacopo Cappellato > Priority: Critical > Fix For: Release Branch 10.04, Upcoming Branch > > Attachments: OFBIZ-2353 SELECT FOR UPDATE solution.patch, OFBIZ-2353 > SELECT FOR UPDATE solution.patch, OFBIZ-2353-AC.patch, OFBIZ-2353-AC.patch > > > If Ofbiz is deploy on 2 servers in Load Balancing Mode > SequenceUtil will generate duplicate IDs because synchronization is done at > JVM level instead of doing it in DB. > A good replacement implementation would be: > org.hibernate.id.enhanced.TableGenerator > But it would involve a dependency on Hibernate > Philippe > www.ubik-ingenierie.com -- This message was sent by Atlassian JIRA (v6.3.4#6332)