International Business Machines Corporation

Karen A Witting

Arun Kwangil Iyengar

Richard Pervin King

Daniela Rosu

Paul Reed

Cameron Ferstat

Richard Joseph Stevens

James R H Challenger

James Robert Harold Challenger

Tomer Kol

Craig Alan Bennett

Gerald A Spivak

Lakshmish Macheeri Ramaswamy

A method and apparatus for storing electronic healthcare records is disclosed. Embodiments of the invention provide techniques for managing electronic healthcare records in a hybrid domain that includes a high-availability centralized data store and set of distributed data nodes. A set of location policies may be used to determine whether to store an electronic healthcare record in the centralized data store. Over time, events may occur that trigger certain data records to be relocated from the plurality of distributed database nodes to the centralized data store.

Policy-driven relocation of electronic healthcare records in a network environment

In a system having a plurality of caches, a method for maintaining cached objects includes storing an object in a plurality of caches. In response to a request to update the object, a future invalidation time is determined when the object should be invalidated in caches currently storing the object. Updating of the object is delayed until the invalidation time has passed.

System and method for achieving deferred invalidation consistency

A system and method for maintaining consistency in a system where multiple copies of an object may exist is provided for maintaining consistent copies. Consistency is maintained using a plurality of consistency policies in which at least one consistency policy results in different performance than a second consistency policy. A consistency policy is selected from the plurality consistency policies for each object to improve system performance.

System and method for achieving different levels of data consistency

A method for constructing and publishing a plurality of objects, in accordance with the present invention, includes the steps of providing a plurality of fragments, constructing objects from the plurality of fragments, delaying publication of at least one of the objects, where the at least one of the objects includes at least one fragment belonging to a first class, to examine content, and publishing at least one of the objects including at least one of the fragments belonging to a second class without examining content. A program storage device for implementation of the present invention is also included.

Method and system for rapid publishing and censoring information

Systems and methods for publishing objects (e.g., pages and/or fragments) include assigning expiration times to different versions of objects and determining a plurality of objects which should be published atomically, that is, together in a single action. Then, the invention includes computing updated versions of the plurality of objects and atomically publishing the updated versions wherein the updated versions are not available until after expiration times corresponding to previously published versions of at least one of the plurality of objects (e.g., a cached object) have elapsed. Advantageously, clients attempting to access related cached objects over an information network such as the Internet will not be presented with versions of related objects that are inconsistent with one another.

Growing community of inventors

Croton-on-Hudson, NY, United States of America

Karen A Witting