在开源支持就定下了⼀个目标，尽可能的减少用户部署以及运维成本，做到用户只需要⼀个 程序包，就可以快速以单机模式启动 Nacos 或者以集群模式启动 Nacos。而 Nacos 是⼀个需要 存储数据的⼀个组件，因此，为了实现这个目标，就需要在 Nacos 内部实现数据存储。单机下其 实问题不大，简单的内嵌关系型数据库即可；但是集群模式下，就需要考虑如何保障各个节点之间 的数据⼀致性以及数据同步，而要解决这个问题，就不得不引入共识算法，通过算法来保障各个节 节 点之间的数据的⼀致性。 为什么 Nacos 选择了 Raft 以及 Distro 为什么 Nacos 会在单个集群中同时运行 CP 协议以及 AP 协议呢？这其实要从 Nacos 的场景出 发的：Nacos 是⼀个集服务注册发现以及配置管理于⼀体的组件，因此对于集群下，各个节点之间 的数据⼀致性保障问题，需要拆分成两个方面 从服务注册发现来看 服务发现注册中心，在当前微服务体系下 失的话，是可以通过该机制快速弥补数据丢失。 29 > Nacos 架构 因此，为了满足服务发现注册中心的可用性，强⼀致性的共识算法这里就不太合适了，因为强⼀致 性共识算法能否对外提供服务是有要求的，如果当前集群可用的节点数没有过半的话，整个算法直 接“罢工”，而最终⼀致共识算法的话，更多保障服务的可用性，并且能够保证在⼀定的时间内各 个节点之间的数据能够达成⼀致。 上述的都是针对于 Nacos 服务

mycorp:mycorp- versions:1.0.0.RELEASE@properties") compile("org.springframework.data:spring-data-hadoop") } Version information needs to be published to a repository as a .properties file. For the above mycorp-versions.properties file might contain the following: org.springframework.data\:spring-data-hadoop=2.0.0.RELEASE The properties file takes precedence over Spring Boot’s defaults, and can be used

mycorp:mycorp-versions:1.0.0.RELEASE@properties") compile("org.springframework.data:spring-data-hadoop") } Version information needs to be published to a repository as a .properties file. For the above mycorp-versions.properties file might contain the following: org.springframework.data\:spring-data-hadoop=2.0.0.RELEASE The properties file takes precedence over Spring Boot’s defaults, and can be used

mycorp:mycorp- versions:1.0.0.RELEASE@properties") compile("org.springframework.data:spring-data-hadoop") } Version information needs to be published to a repository as a .properties file. For the above mycorp-versions.properties file might contain the following: org.springframework.data\:spring-data-hadoop=2.0.0.RELEASE The properties file takes precedence over Spring Boot’s defaults, and can be used

mycorp:mycorp-versions:1.0.0.RELEASE@properties") compile("org.springframework.data:spring-data-hadoop") } Version information needs to be published to a repository as a .properties file. For the above mycorp-versions.properties file might contain the following: org.springframework.data\:spring-data-hadoop=2.0.0.RELEASE The properties file takes precedence over Spring Boot’s defaults, and can be used

mycorp:mycorp-versions:1.0.0.RELEASE@properties") compile("org.springframework.data:spring-data-hadoop") } Version information needs to be published to a repository as a .properties file. For the above mycorp-versions.properties file might contain the following: org.springframework.data\:spring-data-hadoop=2.0.0.RELEASE The properties file takes precedence over Spring Boot’s defaults, and can be used

mycorp:mycorp- versions:1.0.0.RELEASE@properties") compile("org.springframework.data:spring-data-hadoop") } Version information needs to be published to a repository as a .properties file. For the above mycorp-versions.properties file might contain the following: org.springframework.data\:spring-data-hadoop=2.0.0.RELEASE The properties file takes precedence over Spring Boot’s defaults, and can be used

mycorp:mycorp- versions:1.0.0.RELEASE@properties") compile("org.springframework.data:spring-data-hadoop") } Version information needs to be published to a repository as a .properties file. For the above mycorp-versions.properties file might contain the following: org.springframework.data\:spring-data-hadoop=2.0.0.RELEASE The properties file takes precedence over Spring Boot’s defaults, and can be used

mycorp:mycorp-versions:1.0.0.RELEASE@properties") compile("org.springframework.data:spring-data-hadoop") } Version information needs to be published to a repository as a .properties file. For the above mycorp-versions.properties file might contain the following: org.springframework.data\:spring-data-hadoop=2.0.0.RELEASE The properties file takes precedence over Spring Boot’s defaults, and can be used

mycorp:mycorp-versions:1.0.0.RELEASE@properties") compile("org.springframework.data:spring-data-hadoop") } Version information needs to be published to a repository as a .properties file. For the above mycorp-versions.properties file might contain the following: org.springframework.data\:spring-data-hadoop=2.0.0.RELEASE The properties file takes precedence over Spring Boot’s defaults, and can be used