Preventing write amplification during frequent data updates
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United States of America Patent
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app pub date -
Jul 29, 2016
filing date -
Jul 29, 2016
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Abstract
A system, method, and apparatus are provided for limiting or preventing write amplification. Full documents (which may be stored as blobs) are stored as monolithic entities in that only the entire documents can be written or read. When one or more fields or other portions of a document are determined to be “hot,” those fields are stored in a separate structure, possibly adjacent to the document. When only these fields are updated, the document need not be rewritten. For read requests, both structures are read and merged to yield a true version of the document. Fields may be considered hot based on criteria such as frequency of access, ratio of the fields' size to the size of the document, type of document, the application associated with the document, etc.
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