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Jørgen Løland commented on DERBY-2872: -------------------------------------- Re Q9: As you indicate, this situation will eventually increase the response time for both databases. I would consider this a special case of the failure scenario described as "The master Derby instance is not able to send log to the slave at the same pace as log is generated...." > Add Replication functionality to Derby > -------------------------------------- > > Key: DERBY-2872 > URL: https://issues.apache.org/jira/browse/DERBY-2872 > Project: Derby > Issue Type: New Feature > Components: Replication > Affects Versions: 10.4.0.0 > Reporter: Jørgen Løland > Assignee: Jørgen Løland > Attachments: master_classes_1.pdf, poc_master_v2.diff, > poc_master_v2.stat, poc_master_v2b.diff, poc_slave_v2.diff, > poc_slave_v2.stat, poc_slave_v2b.diff, poc_slave_v2c.diff, > proof-of-concept_v2b-howto.txt, proof_of_concept_master.diff, > proof_of_concept_master.stat, proof_of_concept_slave.diff, > proof_of_concept_slave.stat, replication_funcspec.html, > replication_funcspec_v2.html, replication_funcspec_v3.html, > replication_funcspec_v4.html, replication_funcspec_v5.html, > replication_funcspec_v6.html, replication_funcspec_v7.html, > replication_funcspec_v8.html, replication_funcspec_v9.html, > replication_script.txt, slave_classes_1.pdf > > > It would be nice to have replication functionality to Derby; many potential > Derby users seem to want this. The attached functional specification lists > some initial thoughts for how this feature may work. > Dag Wanvik had a look at this functionality some months ago. He wrote a proof > of concept patch that enables replication by copying (using file system copy) > and redoing the existing Derby transaction log to the slave (unfortunately, I > can not find the mail thread now). > DERBY-2852 contains a patch that enables replication by sending dedicated > logical log records to the slave through a network connection and redoing > these. > Replication has been requested and discussed previously in multiple threads, > including these: > http://mail-archives.apache.org/mod_mbox/db-derby-user/200504.mbox/[EMAIL > PROTECTED] > http://www.nabble.com/Does-Derby-support-Transaction-Logging---t2626667.html -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.