， 对软负载⼀个系统的进行阐述，通过 Nacos 开源分享阿里软负载最佳实践，希望能够帮助到各位开 发者，各位系统架构师，少走弯路。 阿里巴巴云原生应用平台负责人 - 丁宇（叔同） 在阿里中间件开源、自研、商业三位⼀体的战略中，微服务 DNS（Dubbo+Nacos+Spring-cloud- alibba/Sentinel/Seata）组合始终走在前列，引领着微服务领域的发展趋势。Nacos Nacos，也有助于提高分布式系统的设计研发能力。 阿里巴巴中间件负责人 - 胡伟琪（白慕） 阿里巴巴在 10 多年分布式应用架构实践过程中，产出了⼀大批非常优秀的中间件技术产品，其中软 负载领域的 Diamond、Configserver、Vipserver，无论在架构先进性、功能丰富度以及性能方面均 有非常出色的积累，2018 年初中间件团队决定把这⼀领域的技术进行重新梳理并开源，这就是本书 Distro 协议是 Nacos 社区自研的⼀种 AP 分布式协议，是面向临时实例设计的⼀种分布式协议， 其保证了在某些 Nacos 节点宕机后，整个临时实例处理系统依旧可以正常工作。作为⼀种有状态 的中间件应用的内嵌协议，Distro 保证了各个 Nacos 节点对于海量注册请求的统⼀协调和存储。 设计思想 Distro 协议的主要设计思想如下：  Nacos 每个节点是平等的都可以处理写请求，同时把新数据同步到其他节点。

don't need to use AOP if you don't want to, AOP complements Spring IoC to provide a very capable middleware solution. AOP is used in Spring: • To provide declarative enterprise services, especially as aspects. If you are interested only in generic declarative services or other pre-packaged declarative middleware services such as pooling, you don't need to work directly with Spring AOP, and can skip most of Integration 6.1. Overview Spring's proxy-based AOP framework is well suited for handling many generic middleware and application-specific problems. However, there are times when a more powerful AOP solution is

don't need to use AOP if you don't want to, AOP complements Spring IoC to provide a very capable middleware solution. AOP is used in Spring: • To provide declarative enterprise services, especially as aspects. If you are interested only in generic declarative services or other pre-packaged declarative middleware services such as pooling, you don't need to work directly with Spring AOP, and can skip most of Integration 6.1. Overview Spring's proxy-based AOP framework is well suited for handling many generic middleware and application-specific problems. However, there are times when a more powerful AOP solution is

don't need to use AOP if you don't want to, AOP complements Spring IoC to provide a very capable middleware solution. AOP is used in Spring: • To provide declarative enterprise services, especially as aspects. If you are interested only in generic declarative services or other pre-packaged declarative middleware services such as pooling, you don't need to work directly with Spring AOP, and can skip most of Integration 6.1. Overview Spring's proxy-based AOP framework is well suited for handling many generic middleware and application-specific problems. However, there are times when a more powerful AOP solution is

clustered, asynchronous messaging system. Apache ActiveMQ Artemis is an example of Message Oriented Middleware (MoM). For a description of MoMs and other messaging concepts please see the Messaging Concepts

don't need to use AOP if you don't want to, AOP complements Spring IoC to provide a very capable middleware solution. AOP is used in Spring: • To provide declarative enterprise services, especially as aspects. If you are interested only in generic declarative services or other pre-packaged declarative middleware services such as pooling, you don't need to work directly with Spring AOP, and can skip most of Integration 6.1. Overview Spring's proxy-based AOP framework is well suited for handling many generic middleware and application-specific problems. However, there are times when a more powerful AOP solution is

don't need to use AOP if you don't want to, AOP complements Spring IoC to provide a very capable middleware solution. AOP is used in Spring: • To provide declarative enterprise services, especially as aspects. If you are interested only in generic declarative services or other pre-packaged declarative middleware services such as pooling, you don't need to work directly with Spring AOP, and can skip most of Integration 6.1. Overview Spring's proxy-based AOP framework is well suited for handling many generic middleware and application-specific problems. However, there are times when a more powerful AOP solution is

don't need to use AOP if you don't want to, AOP complements Spring IoC to provide a very capable middleware solution. AOP is used in Spring: • To provide declarative enterprise services, especially as aspects. If you are interested only in generic declarative services or other pre-packaged declarative middleware services such as pooling, you don't need to work directly with Spring AOP, and can skip most of Integration 6.1. Overview Spring's proxy-based AOP framework is well suited for handling many generic middleware and application-specific problems. However, there are times when a more powerful AOP solution is

don't need to use AOP if you don't want to, AOP complements Spring IoC to provide a very capable middleware solution. AOP is used in Spring: • To provide declarative enterprise services, especially as aspects. If you are interested only in generic declarative services or other pre-packaged declarative middleware services such as pooling, you don't need to work directly with Spring AOP, and can skip most of Integration 6.1. Overview Spring's proxy-based AOP framework is well suited for handling many generic middleware and application-specific problems. However, there are times when a more powerful AOP solution is

don't need to use AOP if you don't want to, AOP complements Spring IoC to provide a very capable middleware solution. AOP is used in Spring: • To provide declarative enterprise services, especially as aspects. If you are interested only in generic declarative services or other pre-packaged declarative middleware services such as pooling, you don't need to work directly with Spring AOP, and can skip most of Integration 7.1. Overview Spring's proxy-based AOP framework is well suited for handling many generic middleware and application-specific problems. However, there are times when a more powerful AOP solution is