Distributed caching method and system, caching equipment and non-caching equipment

A distributed cache and cache device technology, applied in memory systems, memory address/allocation/relocation, instruments, etc., can solve the problems of limited cache expansion, limited address space, etc., achieve fast memory access speed, and improve access response speed Effect

Inactive Publication Date: 2008-06-11
NEW H3C TECH CO LTD
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Problems solved by technology

Then, even if the number of storage media is increased, under the limitation of the address space accessed by the CPU, the increased storage media may not all be accessed, so the cache

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  • Distributed caching method and system, caching equipment and non-caching equipment
  • Distributed caching method and system, caching equipment and non-caching equipment
  • Distributed caching method and system, caching equipment and non-caching equipment

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[0061] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

[0062] The present invention is a distributed caching scheme, and its basic idea is: in a system with one machine and multiple boards, a part of the memory is divided from the non-cache board as a supplementary cache; the cache board will be prepared to delete data because the local cache is full Stored in the supplementary cache, and use the data in the local cache and the supplementary cache to respond to external data requests.

[0063] Here, the one-machine multi-board system refers to a device frame with multiple single boards, where the multiple single boards include a cache board responsible for caching and multiple non-cache boards responsible for processing other services. Both the cache board and the non-cache board have independent CPUs. When processing the cache business, the cache board uses the original inter-board communication mechani...

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Abstract

The invention discloses a distributed cache method, which is applied in a system with one machine frame and a plurality of single boards, the method comprises: a cache board in the system records a non-cache board which provides the memory of self part as the supplementary cache; the cache stores the data to be deleted due to full local caching in the supplementary cache provided by the non-cache board and deletes the data from the cache board; the cache board responds to the external data request according to the data in the local caching and supplementary cache. The invention also provides another distributed cache method, a distributed caching system and buffers and non buffers in the system. By adopting the invention, the expansion of capacity of caching under the condition of not adding extra storage media can be realized.

Description

technical field [0001] The invention relates to cache technology, in particular to a distributed cache method and system in a one-machine multi-board system, as well as a cache device and a non-cached device. Background technique [0002] With the improvement of system response speed requirements, caching technology is more and more applied in systems that frequently respond to user access requests, such as network storage systems. Cache technology refers to adding a cache device between the user and the real device that provides access services, and temporarily storing the real device data frequently accessed by the user in the cache device. When a user makes a data request, the cache device is first asked. If the requested data is in the cache device, the cache device immediately returns the requested data to the user. Since the cache medium of the cache device usually uses a fast storage medium such as memory, the response speed of the cache device to the data request is...

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Application Information

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IPC IPC(8): G06F12/08G06F12/0871
Inventor 郭峰
Owner NEW H3C TECH CO LTD
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