Distributed multi-stage buffer storage system suitable for object network storage

Abstract

The buffering system includes buffer in zero level in use for buffering metadata, buffer in first level in use for buffering data at client end, and buffer in second level in use for buffering data at object storage node. Management module of buffer in zero level is in charge for looking up, replacing metadata in buffer in zero level, and accessing metadata according to network access control protocol; Management module of buffer in first level is in charge for applying, assigning and recycling shared memory space as well as substituting buffer unit; Management module of buffer in second level is in charge for carrying unitive substitution in multiple queues for buffer in second level between object storage nodes. The invention possesses advantages of solving consistency of buffering metadata at client end, quickening speed fro accessing metadata, reducing response time for requesting service and average search time, raising I / O throughput, and data transmission rate.

Description

technical field [0001] The invention belongs to the technical field of computer storage, and in particular relates to a distributed multi-level cache system suitable for object network storage. Background technique [0002] The next-generation Internet is faster, larger, and has higher security and service quality, which requires the network storage system based on the next-generation Internet to have high efficiency, scalability, security and high service quality. Traditional storage systems built on the basis of blocks and files (such as NAS, SAN, etc.) can no longer meet the above requirements. Professor Paterson of the University of California, Berkeley, Carnegie Mellon University and other universities and research institutions have proposed an object-based (Object-Based) network storage interface protocol to facilitate the construction of efficient large-scale network storage systems. [0003] The invention with the Chinese invention patent publication number of CN 17...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a distributed multi-level cache system suitable for object network storage. This system overcomes the shortcomings of the existing cache system, such as complex access control protocols and large delays in access requests. The three-level cache provides a complete cache system and its cache strategy, simplifies the network access protocol between nodes, reduces the load of the metadata server, reduces the response time of data access requests, improves the system I / O processing capacity, and reduces the system construction cost

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