Two-phase commit with queryable caches

Details Two-phase commit with queryable caches Two-phase commit with queryable caches

2008-07-15

2008-07-15

LeRoux, Etienne P (Department: 2161)

Data processing: database and file management or data structures

Database design

Data structure types

Reexamination Certificate

active

09881505

ABSTRACT:
An optimization of the two-phase commit protocol employed in distributed systems. Each cohort component of the distributed system augments messages that are accessible to the coordinator component with state information indicating whether the cohort is read-only with regard to a transaction that the coordinator is coordinating. The coordinator retains the most recent state information. The coordinator reads the retained state information for the cohorts and when the transaction terminates, the coordinator reads the retained state information. Where the cohort's state is read-only, the coordinator simply sends an abort message instead of performing the full two-phase commit protocol with regard to the read-only cohort. In the trees of distributed system components that are defined by transactions, any cohort which has children in the tree is a local coordinator for its children. The general technique of cohorts augmenting messages accessible to a coordinator with state information that is relevant to an action to be performed by the coordinator and the coordinator acting in accordance with state retained from the messages has other uses as well.

REFERENCES:
patent: 4866714 (1989-09-01), Adams et al.
patent: 5335343 (1994-08-01), Lampson et al.
patent: 5452445 (1995-09-01), Hallmark et al.
patent: 5917998 (1999-06-01), Cabrera et al.
patent: 6088694 (2000-07-01), Burns et al.
patent: 6538668 (2003-03-01), Ruberg et al.
patent: 6952741 (2005-10-01), Bartlett et al.
patent: 2002/0120696 (2002-08-01), Mousseau et al.

Affiliated with

Also associated with

Rating

Two-phase commit with queryable caches does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two-phase commit with queryable caches, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-phase commit with queryable caches will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3935715