Data processing: database and file management or data structures – Database design – Data structure types
Patent
1999-08-24
2000-12-05
Amsbury, Wayne
Data processing: database and file management or data structures
Database design
Data structure types
G06F 1730
Patent
active
061579254
ABSTRACT:
Methods and systems are provided for caching information in a distributed computer system such as a directory service system. Tuples in a client cache contain component identifiers and corresponding location identifiers. Tuples may contain a list of network addresses specifying at least one server containing additional location or object information, as well as replica flags which distinguish between read-only replicas, read-write replicas, and a master replica. Requests to access an object may be serviced by using cached information rather than making one or more attempts to obtain location information from servers. Tuples may be modified or invalidated such that read operations tend to be performed using read-only replicas. Cached tuples which contain a component identifier that is no longer valid because an object was moved or renamed may be invalidated. The cache may also be modified to redirect operations from a master replica to a non-master replica.
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Childers Randal
Jenkins Christopher
Amsbury Wayne
Novell Inc.
Pardo Thuy
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