A Metadata Cache Replacement Method for Cloud Storage System
A cloud storage system and cache replacement technology, applied in the direction of program loading/starting, program control devices, etc., can solve the problem of not being able to adapt to the access characteristics well, so as to improve the replacement management ability, improve system performance, and avoid mutual interference. Effect
Active Publication Date: 2017-04-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Therefore, the existing cache replacement strategy cannot well adapt to the access characteristics in the cloud storage environment, and a new cache replacement strategy is needed
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[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0037] A metadata cache replacement method for a cloud storage system, the cloud storage system includes a metadata cache area, the metadata is divided into private metadata and shared metadata, and the metadata cache is divided into providing a cache for the private metadata private cache area and a shared cache area that provides cache for shared metadata; respectively set replacement policies for the private cache area and shared cache area, and the cloud storage system performs Data and private metadata in the private cache are replaced separately. When an access request arrives, the system processing flow is as follows: figure 1 shown. Private metadata and shared metadata are distinguished according to the descriptive value of the metadata attribute of the file data.
[0038] In a cloud storage environment, user requests are variable and uncerta...
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The invention relates to the field of cache management, and discloses a metadata cache replacement method of a cloud storage system, which divides metadata into private metadata and shared metadata, and divides metadata cache into private cache and shared cache; A replacement policy for the private cache area and the shared cache area is determined, and the cloud storage system respectively replaces the shared metadata in the shared cache area and the private metadata in the private cache area according to the corresponding replacement policy. Respectively meet the different replacement management requirements of private metadata and shared metadata, avoid the mutual interference of the two metadata during cache replacement, improve the system's ability to replace metadata, improve the hit rate of metadata cache, and speed up system response. Improve system performance. It can adapt to the access characteristics of a large number of users, a large amount of data, and variable loads in a cloud storage environment.
Description
technical field [0001] The invention relates to the field of cache management, in particular to a metadata cache replacement method of a cloud storage system. Background technique [0002] Cloud storage is a new concept extended and derived from the concept of cloud computing. Cloud computing is the development of distributed processing, parallel processing and grid computing. It is to automatically split a huge computing processing program into countless smaller subroutines through the network, and then hand it over to a huge system composed of multiple servers. After calculation and analysis, the processing results are returned to the user. The concept of cloud storage is similar to cloud computing. It refers to a large number of different types of storage devices in the network that work together through application software to provide data storage to the outside world through functions such as cluster applications, grid technology, or distributed file systems. A system...
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IPC IPC(8): G06F9/445
Inventor 罗光春田玲陈爱国段贵多赵稳
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA