Cloud computing and its key techniques

Cloud computing is a new computing model; it is developed based on grid computing. The authors introduced the development history of cloud computing; took cloud computing of Google techniques as an example, summed up key techniques, such as data storage technology (Google File System), data management technology (Big Table), as well as programming model and task scheduling model (Map-Reduce), used in cloud computing. Finally the paper analyses the challenge of cloud computing and pointed out the broad development prospects of cloud computing.