# 分布式系统核心技术

**万法皆空，因果不空。**

随着摩尔定律碰到瓶颈，分布式架构逐渐流行起来。

从单点演变到分布式结构，重要问题之一就是数据一致性。很显然，如果分布式集群中多个节点处理结果无法保证一致，那么在其上的业务系统将无法正常工作。

区块链系统是一个典型的分布式系统，必然也会碰到这些经典问题。

本章将介绍分布式系统领域的核心技术，包括一致性、共识，介绍这些概念的定义、基本原理和常见算法，最后还介绍了评估分布式系统可靠性的指标。


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