Research on vector spatial data access based on Main memory database

This paper concentrates on reducing the cost of I/O and improving algorithm efficiency by designing and realizing a spatial data access system based on main memory database (MMDB). We use Redis to manage vector spatial data in main memory which is faster than hard disk or disk-based database in respect of data access. We design a management strategy of spatial data, internal and external data exchange strategy and data backup mechanism. Based on MMDB, we design the model of vector spatial data to describe its form, organization and access methods. The experimental results show that our data access strategy can cut down the time of I/O and improve the algorithm efficiency effectively.