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Data caching method, equipment and system

A technology for caching data and data, which is applied in memory systems, data processing input/output processes, electrical digital data processing, etc., and can solve the problem that data cannot be upgraded to FASTCache.

Active Publication Date: 2018-04-03
EMC IP HLDG CO LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may cause the problem that long-term hot data cannot be promoted to FAST Cache, while short-term hot noisy data is promoted to FAST Cache

Method used

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  • Data caching method, equipment and system
  • Data caching method, equipment and system
  • Data caching method, equipment and system

Examples

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Embodiment Construction

[0032] Hereinafter, various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that these drawings and description relate to preferred embodiments as examples only. It should be noted that, from the ensuing description, alternative embodiments of the structures and methods disclosed herein are readily conceivable and may be employed without departing from the disclosed principles of the present disclosure as claimed.

[0033] It should be understood that these exemplary embodiments are given only to enable those skilled in the art to better understand and implement the present disclosure, but not to limit the scope of the present disclosure in any way. In addition, in the drawings, optional steps, modules, units, etc. are shown in broken line boxes for the purpose of illustration.

[0034]The terms "including", "comprising" and similar terms used herein should be understood as open-ended ...

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Abstract

The invention provides a data caching method, equipment and system. In one implementation manner, the data caching method comprises the following steps of: recording access counting information related to each piece of data in a recording period of recording access counting information of data. Wherein the recording period comprises a plurality of recording time slot, recording of the access counting information in a single recording time slot is constrained and the access counting information in a plurality of recording time slots is accumulated; and in response to the fact that the recordingperiod expires, enabling each piece of data to be promoted to a cache storage area on the basis of the access counting information. By utilizing the implementation manner, relatively hot data in a relatively long time can obtain a relatively good change to be prompted to the cache storage area, and meanwhile, the possibility that relatively hot noise data in a short time is promoted can be decreased, so that more effective data cache is realized and cache resources can be utilized more sufficiently.

Description

technical field [0001] The embodiments of the present disclosure relate to the technical field of caching, and more particularly, to a method, device, and system for caching data. Background technique [0002] Hierarchical storage is a technology based on "information lifecycle management" that proposes to store data information through multiple layers. According to this technology, the storage structure generally includes a bottom storage pool, a mid-level cache (such as EMC's FAST Cache), and a high-level system cache (such as a physical dynamic random access memory (DRAM) memory, such as EMC's SPCache). Tier 2 caches such as FAST Cache are mid-tier caches that sit between high-level system caches and low-level storage pools, which were proposed to address cache scalability issues in order to allow storage systems to have more efficient input / output (I / O) response times and I / O processing rates. [0003] In layer 2 caches such as FAST Cache, promotion logic is used, whic...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0604G06F3/0656G06F12/0862G06F12/0868G06F12/0897G06F2212/1016G06F2212/1044G06F2212/461G06F2212/466G06F2212/6024G06F3/064G06F12/0246G06F12/0866G06F12/123G06F12/127
Inventor 鄢彪胡博李晶黄佳吴迁
Owner EMC IP HLDG CO LLC
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