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Method of storing data into flash memory in a DBMS-independent manner using the page-differential
Method of storing data into flash memory in a DBMS-independent manner using the page-differential
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机译:使用页面差异以独立于DBMS的方式将数据存储到闪存中的方法
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摘要
The present invention proposes an effective and efficient method of storing data called page-differential logging for flash-based storage systems. The primary characteristics of the invention are: (1) it writes only the page-differential that is defined as the difference between an original page in flash memory and an up-to-date page in memory; (2) it computes and writes the page-differential only when an updated page needs to be reflected into flash memory. When an updated page needs to be reflected into flash memory, the present invention stores the page into a base page and a differential page in flash memory. When a page is recreated from flash memory, it reads the base page and the differential page, and then, creates the page by merging the base page with its page-differential in the differential page. This invention significantly improves I/O performance of flash-based storage systems compared with existing page-based and log-based methods.
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