Persistent data storage techniques
First Claim
1. A computer-implemented method comprisingaccepting from a source a task or a job to be executed in a persistently stored database, the task or job corresponding to a transaction to be committed, the task or job requiring access to change specific data in the database in order to execute the task or job, the data in the database being consistent and being subject to another conflicting task or job,before the task or job has been executed, providing an acknowledgement to the source indicating that the task or job is guaranteed to be executed,the task or job to be executed in the database notwithstanding the conflicting task or job and the task or job to be executed in a manner to maintain the consistency of the data pieces in the database.
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Accused Products
Abstract
A database is maintained that stores data persistently. Tasks are accepted from task sources. At least some of the tasks have competing requirements for use of regions of the database. Each of the regions includes data that is all either locked or not locked for writing at a given time. Each of the regions is associated with an available processor. For each of the tasks, jobs are defined each of which requires write access to regions that are to be accessed by no more than one of the processors. Jobs are distributed for concurrent execution by the associated processors.
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Citations
27 Claims
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1. A computer-implemented method comprising
accepting from a source a task or a job to be executed in a persistently stored database, the task or job corresponding to a transaction to be committed, the task or job requiring access to change specific data in the database in order to execute the task or job, the data in the database being consistent and being subject to another conflicting task or job, before the task or job has been executed, providing an acknowledgement to the source indicating that the task or job is guaranteed to be executed, the task or job to be executed in the database notwithstanding the conflicting task or job and the task or job to be executed in a manner to maintain the consistency of the data pieces in the database.
Specification