Data caching method and data caching device
A data cache and data technology, applied in the direction of electrical digital data processing, memory system, memory address/allocation/relocation, etc., can solve problems affecting normal business operations, data overwriting, discarding, etc.
Active Publication Date: 2019-07-05
LENOVO (BEIJING) LTD
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Problems solved by technology
However, the computing engine cannot update the cache of the changed part of the data while retaining the unchanged part of the cached data
The existing technology updates the cached data by re-caching all the data of a service as a whole, which will cause all the original cached data to be overwritten or discarded
Moreover, as the amount of data increases and the dynamic changes of data become more and more frequent, if all data is re-cached every time, it will cause a large cluster burden and affect the normal operation of the business.
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[0029] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present disclosure.
[0030] The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the present disclosure. The terms "comprising", "comprising", etc. used herein indicate the presence of stated features,...
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The invention provides a data caching method. The method comprises the steps of obtaining a storage corresponding relation of caching each piece of data in first cache data from a first disk area to amemory, wherein the first cache data is a cache of data stored in the first disk area at a first moment; obtaining one or more pieces of data of which the data content changes in the first disk areain a first period, wherein the first period is a period from the first moment to the current time; based on the storage corresponding relation, determining cache information of the one or more piecesof data in the memory; and based on the cache information of the one or more pieces of data, re-caching the one or more pieces of data to update the first cache data. The invention further provides adata caching device.
Description
technical field [0001] The present disclosure relates to a data caching method and a data caching device. Background technique [0002] Existing computing engines, such as Spark, usually cache all the data of a business as a whole when caching data. However, in actual business, data often changes dynamically, such as daily incremental business data, and often not all data will change synchronously. However, the computing engine cannot update the cache of the changed part of the data while retaining the unchanged part of the cached data. In the prior art, the cached data is updated by re-caching all the data of a service as a whole, which will cause all the original cached data to be overwritten or discarded. Moreover, as the amount of data increases and the dynamic changes of data become more and more frequent, if all data is re-cached every time, it will cause a large cluster burden and affect the normal operation of the business. Contents of the invention [0003] One...
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IPC IPC(8): H04L29/08G06F12/08
CPCG06F12/0844G06F12/0806H04L67/1001H04L67/568
Inventor 李栋高锋
Owner LENOVO (BEIJING) LTD