云计算专业英语ppt.ppt

Cloud Computing,Definition,Cloud computing is the development of distributed computing,parallel processing,and grid computing,which represents an emerging business computing model,Cloud Computing Summary,Cloud computing is a kind of network service and is a trend for future computingScalability matters in cloud computing technologyUsers focus on application developmentServices are not known geographically,The specific characteristics,Data in the cloud:not afraid to lose,do not have to back up,you can restore at any point;,Software in the cloud:You do not have to download and update yourself；,Ubiquitous computing:at any time,any place,any device,log in to enjoy computing services;,Powerful computing:unlimited space,unlimited speed,PC,C/S,Cloud Computing,Hardware-centric,Software-centric,Service-centric,(1)Software as a Service(SaaS)SaaS service providers deploy application software on the server,users on demand ordered from the manufacturer via the Internet,service providers charge based on customers needs,and to provide customers with the software through a browser.(2)Platform as a Service(PaaS)Manufacturers provide a development environment,server platforms,hardware resources services to customers,custom develop their own application and pass through its servers and the Internet to other customers(3)Infrastructure services(IaaS)Cloud infrastructure consisting of multiple servers,provide measurement services to customers.,The main forms of service,Origins of cloud computing,In 2006,Google engineer Christophe suggest Google CEO Eric Schmidt the idea of cloud computing“at the first time,under the support of Schmidt,Google rollout Google 101 plan and formally proposed the concept of“cloud.Googles concept of“cloud computing”is a picturesque phrase,to describe Googles business model and computing technology architecture in a romantic way.therefore,cloud computing consists two levels of meaning,in commercial level,just the cloud“;in the technical level is computing,combined the cloud and computing to illustrate that Google is different with traditional software and hardware companies in business models and computing architecture.This is just a very beautiful and very romantic metaphor.,Technical Support,Brief Introduction,Apache Hadoopis a framework for running applications on large cluster built of commodity hardware.The Hadoop framework transparently provides applications both reliability and data motion.Hadoop implements a computational paradigm namedMap/Reduce,where the application is divided into many small fragments of work,each of which may be executed or re-executed on any node in the cluster.In addition,it provides a distributed file system(HDFS)that stores data on the compute nodes,providing very high aggregate bandwidth across the cluster.BothMapReduceand the Hadoop Distributed File System are designed so that node failures are automatically handled by the framework.,Two Important Technical,HDFSHadoop Distributed File System(HDFS)is designed to reliably store very large files across machines in a large cluster.It is inspired by the GoogleFileSystem.MapReduceMapReduce is a programming model for processing large data sets with a parallel,distributed algorithm on a cluster.,The challenge,Cloud storage,data security,Efficient processing core and the development of storage media,Network bandwidth limitations and costs,Limited by the traditional model,Related policies and regulations need to be improved,The lack of uniform standards,The future of cloud computing,Cloud computing is seen as the next revolution of the technology industry,it will bring a fundamental change in working methods and business models.Once cloud computing has been widely promoted,we can predict the upcoming spring of the super computer market!,