什么是分布式系统？

cqwty

谁能说说啊？我看了一本书，上面给的英文定义是这样的：
A distributed system is a collection of independent computers that appears to its users as a single coherent system.

碧城仙

分布式概念应用的范围很广的，楼主说的是分布式操作系统，我们论坛主要讨论分布式计算（或者叫分布式运算），其他应用还有分布式存储、分布式保护、分布式数据处理、分布式能源供应、分布式通信……
但是基本上是两个大类：分布式包括数据分布和操作分布。数据分布是指数据可以分散在网络的不同主机上，操作分布是指把一个计算分散在不同主机上处理。

Phoenix

No completely satisfactory definition has been given for a distributed system, but the following can be used as a loose guide:

    * A distributed system is a collection of independent computers that appears to the users of the system as a single computer.

Example:

    * A bank with many branch offices, each branch having a local computer which can connect to all the other branch computers and a central computer.
    * If transactions can be carried out without regard to account location, this counts as a distributed system.

Phoenix

Definition: A distributed system consists
of a collection of autonomous computers,
connected through a network and
distribution middleware, which enables
computers to coordinate their activities
and to share the resources of the system,
so that users perceive the system as a
single, integrated computing facility.