Importance

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Abstract

To reduce process time by simplifying the cache status and to improve the execution efficiency of the application program in the separate region conversion system that is capable of maintaining the hit rate of the cache at high level. When an access request is made to the object and if the object is not stored in the object cache, the page containing the object is read from the database and is stored in the page cache, and the object is read from the page and stored in the cache. The status of the page cache describing the status of the page stored in the page cache is stored in the page status storage device and at the same time the status of the object cache describing the status of the object stored in the object cache is stored in the object status storage device. By establishing a relationship between the status of the page cache and the status of the object, if the status of the page cache and the corresponding status of the object cache are not consistent, the status synchronizing device executes a synchronization process to make these status consistent.

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First Claim