International Business Machines Corporation

Zhang Yue

Subhendu Das

Xiao Jun Dai

Zhi Gan

Kun Wang

Jia Zou

Yu Fen Yuan

Tianyi Wang

Managing access to a cache memory includes dividing said cache memory into multiple of cache areas, each cache area having multiple entries; and providing at least one separate lock attribute for each cache area such that only a processor thread having possession of the lock attribute corresponding to a particular cache area can update that cache area.

Locks to enable updating data and a data replacement order in cache areas

A data processing method, data query method in a database, and corresponding device. A data processing, wherein a query request for data records includes information indicating a source and destination IP address, the source IP address including N sections, the destination IP address including M sections, both M and N being positive integers, the method including: determining an index encoding manner for the database, wherein the index is an one-dimensional index including N+M sections, the encoding manner specifying a variation sequence of various sections for the index, at least one of the source IP address and the destination address indicated by the information contained in the possible query request including at least one section having a wildcard character, wherein according to the index, for any possible query requests, successive data records can be obtained as a query result; according to the encoding manner, establishing the index for the data records.

Data processing method, data query method in a database, and corresponding device

A cache memory device includes a plurality of cache areas, each the cache area comprising a plurality of entries. The cache memory device is configured to maintain a separate lock attribute for each the cache area and temporarily assign possession of a lock attribute for a particular the cache area to a processor thread attempting to update the particular the cache area, the processor thread being unable to update the particular the cache area without possession of the lock attribute for the particular the cache area.

Managing processor thread access to cache memory using lock attributes

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Beijing, China

Zhang Yue