P2P (peer to peer) technology based distributed data consistency maintaining system and method

Abstract

Disclosed are a P2P (peer to peer) technology based distributed data consistency maintaining system and method. The system is composed of a plurality of data maintaining nodes with identical processing functions but respective unique identification numbers in a distributed cluster system. Each data maintaining node is in charge of managing one or more data access locks with respective unique identification numbers in real time and can receive data reading and accessing of client sides and store one or more data duplicates. Each data maintaining node can maintain a using comparison table of the self-managed data access locks and records serial numbers of each data maintaining node and a mapping relation between the data maintaining nodes and the data access locks by means of a data access lock distribution comparison table. The P2P technology based distributed data consistency maintaining system and method have the advantages that the system is flexible and reliable, single-node fault is avoided, access requests can be sent through other data maintaining nodes, and rollback operation expense and communication expanse of network fault are reduced.

Description

technical field [0001] The invention relates to a distributed data consistency maintenance system and method based on P2P technology, belonging to the technical field of computers. Background technique [0002] The existing methods for solving distributed data consistency and their defects mainly include the following: [0003] Primary access method: When there are multiple data copies of one data in the system, set one of them as the primary data. When accessing, the primary data is first accessed; when the primary data is successfully accessed, the access message is sent from the primary data to other data copies, so that the data copies also perform the same access operation. The disadvantage is that access messages need to be sent to all data nodes within a short period of time. If the transmission cannot be completed within a short period of time, outdated data will be generated in the system, and if the node where the primary data is located fails, the data copy node ...

AI Technical Summary

Problems solved by technology

The transaction control access method has transaction access failure, which causes the frequency of transaction restart to increase, and when the local transaction and the global transaction are executed at the same time, it is easy to cause data access inconsistency

[0008] The above-mentioned consistent access methods in the prior art have imperfections in the node failure and network communication failure that may occur during the access process, and are in urgent need of improvement

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