分布式计算 6 Why? 口“世界是分布的”。 有时将涉及的用户、应用、数据集中化不合适、不可行。 口资源共享 并行处理 口冗余容错 → The main goal of a distributed computing system is to connect users and resources in a transparent, open, and scalable way. Ideally this arrangement is drastically more fault tolerant and more powerful than many combinations of stand-alone computer systems Institute of Computer Software 2021/2/5 Nanjing University分布式计算  Why?  “世界是分布的”。 ◼ 有时将涉及的用户、应用、数据集中化不合适、不可行。  资源共享  并行处理  冗余容错 →The main goal of a distributed computing system is to connect users and resources in a transparent, open, and scalable way. Ideally this arrangement is drastically more fault tolerant and more powerful than many combinations of stand-alone computer systems. 2021/2/5 Institute of Computer Software Nanjing University 6