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Abstract

A process for performing a transaction, such as a write operation, on a data object in a non-log based database is described. An information storage and retrieval system described can execute a transaction at a speed limited only by the hardware of the system. Updates to the data are done in sequential block writes which allow the data to be written continually to memory. This allows for real-time feed of large blocks of data, such as Web content of all types, into the database. The process described allows for handling large data updates in the same manner as small data updates. An entry for a data object containing version data for the data object is created and maintained in an object table. This entry for the data object is written or saved to a non-persistent memory, such as a cache memory at a particular non-persistent memory address. This write operation is then committed by saving the data object in a persistent memory area at a persistent memory area address. With respect to this write transaction, at least one inconsistent data page is identified in the non-persistent memory. This inconsistent data page is then written to the persistent memory area.

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First Claim