VERSIONED RECORDS MANAGEMENT USING RESTART ERA

• US 20170206138A1
• Filed: 01/19/2016
• Published: 07/20/2017
• Est. Priority Date: 01/19/2016
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Larson, Per-Ake, Fitzgerald, Robert Patrick, Diaconu, Cristian
• Granted Patent: US 10,296,418 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 11/1417 Boot up procedures
• CPC Class Codes: G06F 11/1441 Resetting or repowering
• CPC Class Codes: G06F 11/1471 involving logging of persistent data for recovery
• CPC Class Codes: G06F 11/1474 in transactions G06F16/20 takes precedence
• CPC Class Codes: G06F 16/2365 Ensuring data consistency and integrity

Abstract

A versioned records management computing system that uses a restart era in order to promote rapid recovery. A persistent store includes a multi-versioned record collection. The records are also associated with a restart era that corresponds to the era of operation of the computing system after a restart. Upon a recovery, the current restart era changes. An object collection media has an object collection that conforms to an object model such that the object model is used to operate upon the records. The object collection media is operable such that the object collection is durable so as to survive restarts of the system to thereby allow for accelerated recovery.

Claims

7-1. The versioned records management computing system in accordance with claim 1, the object collection media operable such that the object collection is durable such that each object is at a known location upon restart.

18. A method for operating a versioned records management computing system having a restart era that changes when the versioned records management computing system recovers from a crash, the method comprising:

an act of holding a multi-versioned record collection in a persistent store, the multi-versioned record collection comprising a plurality of records collectively corresponding to multiple versions, the plurality of records associated with a restart era; and

an act of holding an object collection on an object collection media, the object collection conforming to an object model such that the object model is used to operate upon the plurality of records, the object collection media operable such that the object collection is durable; and

an act of performing at least some atomic operations upon the object collection such that at least in the case of an impending crash, the object collection is durable in a consistent state, and is available for use consistent with the object model in subsequent recovery of the versioned records management computing system.

19. The method for operating a versioned records management computing system in accordance with claim 18, the method further comprising:

an act of recovering from a crash using the persistent store such that each record that was valid and visible at any given time prior to the crash remains valid and visible at that time after the crash, and such that the object model is used to operate upon the plurality of records;

an act of using the object model to operate upon the plurality of records after recovery to facilitate normal operation;

during normal operation, an act of evaluating each of at least some of the plurality of records and as a result an act of promoting a restart era of at least some of the evaluated records to the current restart era.

20. A computer program product comprising one or more computer-readable storage media having thereon computing executable instructions that structured such that, when executed by one or more processors of the computing system, configure the computing system to instantiate and/or operate a records management component for use in a versioned records management computing system that comprises a persistent store that includes a multi-versioned record collection comprising a plurality of records collectively corresponding to multiple versions, the plurality of records associated with a restart era;

and an object collection media having thereon an object collection that conforms to an object model such that the object model is used to operate upon the plurality of records, the object collection media operable such that the object collection is durable, the records management component configured to perform the following;

an act of performing at least some atomic operations upon the object collection such that at least in the case of an impending crash, the object collection is durable in a consistent state, and is available for use consistent with the object model in subsequent recovery of the versioned records management computing system; and

an act of managing visibility of the plurality of records based on the version of each record.