Spatial data storage organization method and system in consideration of load balancing and disc efficiency

Abstract

The invention discloses a spatial data storage organization method and system in consideration of load balancing and disc efficiency. The method comprises the steps of counting an average access concurrency degree according to times of spatial data files accessed and requested by a user; distributively storing the spatial data files to a distributed geographical information system server according to the load balancing requirement of a distributed geographical information system and the average access concurrency degree; calculating the average access continuity of the spatial data files according to the average access concurrency degree and an average access spacing distance of the spatial data files; and carrying out consecutive storage organization on the spatial data files in the same server according to the average access continuity of the spatial data files. According to the spatial data storage organization method and the spatial data storage organization system in consideration of load balancing and disc efficiency, effective batch reading of continuous accessed space data is realized and the storage efficiency of the geographical information system is guaranteed while the load balancing requirement is satisfied. The project is completed by funding of Natural Science Foundation of China (Fund No: 41671382, 41271398).

Description

technical field [0001] The invention belongs to the technical field of spatial data storage organization, and in particular relates to a spatial data storage organization method and system considering load balancing and disk efficiency. Background technique [0002] The application of geographic information system in the fields of urban planning, environmental monitoring, and disaster prevention and mitigation is becoming more and more popular. It is necessary to focus on solving the infinite bandwidth demand (Infinite Bandwidth) and infinite capacity demand (Infinite Capacity) brought about by the intensive access of users. As well as Infinite Processing Capability, distributed systems provide storage and access services for massive spatial data and become one of the effective ways to solve the above problems. At present, traditional network geographic information systems, such as NASA WorldWind, usually adopt a data-driven spatial data storage organization method, which ma...

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Problems solved by technology

[0005] In short, the existing methods of distributing and storing spatial data purely from the perspective of improving the concurrency capability of geographic information systems or improving the continuous reading efficiency of spatial data through combined storage cannot meet the load balancing requirements of geographic information systems and efficient disk I / O at the same time. O demand

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