及程度有关。Consul 和 Eureka 都出现于 2014 年，Consul 在设计上把很多分布式服务治理上要 用到的功能都包含在内，可以支持服务注册、健康检查、配置管理、Service Mesh 等。而 Eureka 则借着微服务概念的流行，与 SpringCloud 生态的深度结合，也获取了大量的用户。去年开源的 Nacos，则携带着阿里巴巴大规模服务生产经验，试图在服务注册和配置管理这个市场上，提供给 为了标示该服务是哪种类 型的服务，需要在创建服务时选择服务的持久化属性。考虑到目前大多数使用动态服务发现的场景 为非持久化服务的类型（如 Spring Cloud，Dubbo，Service Mesh 等），Nacos 将缺醒值设置为 了非持久化服务。 85 > Nacos 架构 在 Nacos2.0 版本后，持久化属性的定义被抽象到服务中，⼀个服务只能被定义成持久化服务或非 持久化服 下⼀代微服务架构——服务网格 为了解决传统微服务体系架构的上述三种局限性，以 Istio，NginxMesh 为代表的代理模式（边车 模式）应运而生，这就是当前微服务架构领域比较火热的服务网格技术——Service Mesh，它将分 布式服务的通信层抽象为单独的⼀层，在这⼀层中实现负载均衡、服务发现、认证授权、监控追踪、 流量控制等分布式系统所需要的功能。 从宏观上看，其实现方式为引入⼀个代理服务，以 Sidecar

routing connections between multiple geographically distributed servers, creating your global messaging mesh. Diverts are defined as xml in the broker.xml file at the core attribute level. There can be further details please goto Queue Federation. Federation 227 WAN Full Mesh With federation it is possible to provide a WAN mesh of brokers, replicating with Address Federation or routing and load balancing Linking producers and consumers distant from each other. Figure 3. Example possible full federation mesh Configuring Federation Federation is configured in broker.xml . Sample:

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connections between multiple geographically distributed servers, creating your global messaging mesh. Diverts are defined as xml in the broker.xml file at the core attribute level. There can be Federation For further details please goto Queue Federation. WAN Full Mesh With federation it is possible to provide a WAN mesh of brokers, replicating with Address Federation or routing and load balancing and consumers distant from each other. Federation 351 Figure 3. Example possible full federation mesh Configuring Federation Federation is configured in broker.xml . Sample: Federation 352

routing connections between multiple geographically distributed servers, creating your global messaging mesh. Diverts are defined as xml in the broker.xml file at the core attribute level. There can be further details please goto Queue Federation. Federation 240 WAN Full Mesh With federation it is possible to provide a WAN mesh of brokers, replicating with Address Federation or routing and load balancing Linking producers and consumers distant from each other. Figure 3. Example possible full federation mesh Configuring Federation Federation is configured in broker.xml . Sample:

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routing connections between multiple geographically distributed servers, creating your global messaging mesh. Diverts are defined as xml in the broker.xml file at the core attribute level. There can be further details please goto Queue Federation. Federation 222 WAN Full Mesh With federation it is possible to provide a WAN mesh of brokers, replicating with Address Federation or routing and load balancing Linking producers and consumers distant from each other. Figure 3. Example possible full federation mesh Configuring Federation Federation is configured in broker.xml . Sample:

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188 33.4. WAN Full Mesh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . routing connections between multiple geographically distributed servers, creating your global messaging mesh. Diverts are defined as xml in the broker.xml file at the core attribute level. There can be zero Federation For further details please goto Queue Federation. 33.4. WAN Full Mesh With federation it is possible to provide a WAN mesh of brokers, replicating with Address Federation or routing and load balancing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 32.4. WAN Full Mesh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . routing connections between multiple geographically distributed servers, creating your global messaging mesh. Diverts are defined as xml in the broker.xml file at the core attribute level. There can be zero Federation For further details please goto Queue Federation. 32.4. WAN Full Mesh With federation it is possible to provide a WAN mesh of brokers, replicating with Address Federation or routing and load balancing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 32.4. WAN Full Mesh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . routing connections between multiple geographically distributed servers, creating your global messaging mesh. Diverts are defined as xml in the broker.xml file at the core attribute level. There can be zero Federation For further details please goto Queue Federation. 32.4. WAN Full Mesh With federation it is possible to provide a WAN mesh of brokers, replicating with Address Federation or routing and load balancing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 32.4. WAN Full Mesh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . routing connections between multiple geographically distributed servers, creating your global messaging mesh. Diverts are defined as xml in the broker.xml file at the core attribute level. There can be zero Federation For further details please goto Queue Federation. 32.4. WAN Full Mesh With federation it is possible to provide a WAN mesh of brokers, replicating with Address Federation or routing and load balancing

connections between multiple geographically distributed servers, creating your global messaging mesh. Diverts are defined as xml in the broker.xml file at the core attribute level. There can be details please goto Queue Federation. Address Federation 315 WAN Full Mesh With federation it is possible to provide a WAN mesh of brokers, replicating with Address Federation or routing and load balancing Linking producers and consumers distant from each other. Figure 3. Example possible full federation mesh Configuring Federation Federation is configured in broker.xml . Sample:

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