Patent ID: 7490113
Filing Date: 2009-02-10
Classification: G06F,G06Q,Y10S

Abstract:
1. A method comprising: publishing, by a first log reader, first messages to a plurality of queues, the first messages comprising changes for transactions extracted from a log by the first log reader; in response to one of the queues becoming unavailable, launching a second log reader to read and extract from the log, and to publish second messages comprising changes for transactions extracted from the log by the second log reader to the unavailable queue as a catch-up queue; and in response to the catch-up queue becoming available and the second log reader reaches the end of the log, transferring the publishing of the second messages for the catch-up queue from the second log reader to the first log reader, wherein said transferring comprises re-synchronizing the second log reader and the first log reader, wherein said re-synchronizing comprises: