Techniques for message retransmission mechanism

摘要

Embodiments of the Message Retransmission Mechanism Apparatuses, Methods and Systems (“MRM”) transform application requests for message journals via MRM components into expedited access to segmented message streams. In one implementation, the MRM may obtain message journal of messages written by applications during system operations and divide up the message obtained from the complete message journal into message segments. In some implementations, the MRM may provide recovering applications access to said message segments for expedited message consumption.

主权项

1. An expedited message retransmission method for a computer system, comprising:
maintaining, in a storage medium of the computer system, a master journal of sequenced messages generated from a plurality of messages written by applications or processes during operations of the computer system, at least one subset of said applications or processes requiring access to said sequenced messages to function properly; determining an estimated demand for access to said sequenced messages by said at least one subset of applications or processes that may experience failovers; generating, based on said estimated demand, one or more journal copies and/or one or more journal segments by duplicating content of said master journal, each said journal copy or journal segment being independently accessible by a single application or process at any given moment; and allocating said one or more journal copies and/or said one or more journal segments, upon demand, to some of said at least one subset of said applications or processes that have experienced failovers or a gap in said sequenced messages, such that multiple applications or processes can simultaneously access the content of said master journal, thereby expediting access to said sequenced messages in said master journal by said some applications or processes in their recovery from said failovers or said gap in said sequenced messages.