关键词: 云计算, 数据存储, 数据管理, 编程模型

Abstract: Cloud computing is a new computing model; it is developed based on grid computing. The authors introduced the development history of cloud computing and its application situation; compared existing definitions of cloud computing and gave a new definition; took google's cloud computing techniques as an example, summed up key techniques, such as data storage technology (Google File System), data management technology (BigTable), as well as programming model and task scheduling model(Map-Reduce), used in cloud computing; and analyzed the differences among cloud computing, grid computing and traditional super-computing, and fingered out the broad development prospects of cloud computing.

Key words: cloud computing, data storage, data management, programming model