分布式系统为什么需要同步

leolyu2023

这个是Leslie Lamport 大神在1978年写的经典论文，讨论了分布式系统的同步问题。非常值得一读。

Time, Clocks, and the Ordering of Events in a Distributed System
The concept of one event happening before another in a distributed system is examined, and is shown to define a partial ordering of the events. A distributed algorithm is given for synchronizing a system of logical clocks which can be used to totally order the events. The use of the total ordering is illustrated with a method for solving synchronization problems. The algorithm is then specialized for synchronizing physical clocks, and a bound is derived on how far out of synchrony the clocks can become. Key Words and Phrases: distributed systems, computer networks, clock synchronization, multiprocess systems.