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A Data Consistency System Based on Satellite Network Environment

A satellite network and consistency technology, applied in the direction of digital transmission system, transmission system, data exchange network, etc., can solve the problems of slow read and write response, high overhead, unable to achieve fine-grained consistency guarantee, etc., to reduce delay overhead , the effect of reducing synchronization overhead and avoiding occupying network bandwidth and storage space

Active Publication Date: 2019-06-11
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a data consistency system based on the satellite network environment, thereby solving the existing problems in the prior art that cannot achieve fine-grained consistency guarantee, slow read and write response, and overhead big technical problem

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  • A Data Consistency System Based on Satellite Network Environment
  • A Data Consistency System Based on Satellite Network Environment
  • A Data Consistency System Based on Satellite Network Environment

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0027] like figure 1 As shown, a data consistency system based on a satellite network environment includes n gateway stations and several clients,

[0028] The client is configured to send a write operation to the metadata server and the data server.

[0029] The gateway station communicates with the satellite group through the satellite network, and the gateway stations are connected by links...

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Abstract

The invention discloses a data consistency system based on a satellite network environment. The system comprises n gateway stations, wherein each gateway station comprises a meta-data server and is used for realizing meta-data synchronization by means of a chain-based high-consistency strategy through a transaction chain when the average speed of the chain is larger than or equal with a threshold,and otherwise, realizing meta-data synchronization by means of a chain-based low-consistency strategy through the transaction chain; a hot-standby meta-data server which is used for replacing the meta-data server for service when shutdown of the meta-data server occurs; and a data server which is used for supplying the chain-based high-consistency strategy for the writing operation of the data block in the data server when the average speed of the chain is larger than or equal with the threshold, and otherwise, supplying the chain-based low-consistency strategy. The data consistency system has advantages of ensuring high granularity consistency, realizing quick read-and-write response and reducing synchronous expenditure of repeated data.

Description

technical field [0001] The invention belongs to the technical field of computer storage, and more specifically relates to a data consistency system based on a satellite network environment. Background technique [0002] With the rapid development of the Internet, the seamless coverage of information sharing and the increasing demand for various services, under the dual influence of commercial needs and military needs, the conceptual model of space-ground integrated information network came into being, which makes the research on the use of satellites to establish a space Internet change. is particularly important. [0003] Using satellites to form one or more distributed systems with coordinated operation faces many problems that need to be solved, among which data consistency guarantee is an important research direction of distributed systems. Since the satellite network is affected by many aspects such as bandwidth, power consumption, satellite orbit and communication har...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/743H04L12/755H04L29/08
CPCH04L41/0663H04L41/0893H04L45/021H04L45/7453H04L67/1095
Inventor 谭支鹏张鑫孙晨华窦志斌陈乃辉
Owner HUAZHONG UNIV OF SCI & TECH
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