A disk cache method and system

Abstract

The invention discloses a disk caching method and system, in which N data blocks are obtained through the network, and the data blocks are verified, and the block number determined by uniformly numbering the storage positions of the block data in multiple data files , select a block number whose storage location is free, search the corresponding data file from the database based on the block number, and determine the file offset position where the block data data block is written into the found data file, and write the block The block information of the data block is saved to the database. The present invention can place network data in multiple data files, and the storage method of multiple data files can support multiple disks. By distributing different data files for storing network data into different disks, the available space of multiple disks is all When the value is small, a higher cache size can still be achieved, so the cache size can be dynamically adaptive according to the available space of the disk.

Description

technical field [0001] The present invention relates to the technical field of data storage, and more specifically, to a disk cache method and system. Background technique [0002] P2P (Peer to Peer) network, that is, a peer-to-peer network, is a distributed application architecture that distributes tasks and workloads among peers (Peer), and is a network formed by a peer-to-peer computing model at the application layer or web form. At present, after the data blocks obtained from the P2P network are downloaded locally, they will be stored in the disk cache. When providing the data upload service, the data to be uploaded is found from the disk cache, read and sent to the P2P network. [0003] In the prior art, network data will be placed in a data file. Since a data file can only be placed on one disk, when the configuration of the data file uses a large space, for example, the data file is a 4G file, and the disk’s There are few storage locations available. For example, w...

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Problems solved by technology

[0003] In the prior art, network data will be placed in a data file. Since a data file can only be placed on one disk, when the configuration of the data file uses a large space, for example, the data file is a 4G file, and the disk’s There are few storage locations available. For example, when there is only 2G, the data file can only store 2G data, and cannot continue to store data on another disk with 2G free space

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