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| Introduction |
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| 1.3 架构 |
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| 2.1 依赖 |
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| 3.2 属性配置 |
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| 3.3 API配置 |
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| 3.4 注解配置 |
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| 4 示例 |
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| 4.1 启动时检查 |
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| 4.2 集群容错 |
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| 4.3 负载均衡 |
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| 4.4 线程模型 |
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| 4.5 直连提供者 |
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| 4.6 只订阅 |
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| 4.7 只注册 |
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| 4.8 静态服务 |
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| 4.9 多协议 |
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| 4.10 多注册中心 |
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| 4.11 服务分组 |
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| 4.13 多版本 |
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| 4.14 分组聚合 |
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| 4.15 参数验证 |
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| </a> |
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| 4.16 结果缓存 |
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| 4.17 泛化引用 |
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| <li class="chapter " data-level="1.5.17" data-path="demos/泛化实现.html"> |
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| 4.18 泛化实现 |
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| </a> |
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| <li class="chapter " data-level="1.5.18" data-path="demos/回声测试.html"> |
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| <a href="demos/回声测试.html"> |
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| 4.19 回声测试 |
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| </a> |
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| 4.20 上下文信息 |
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| </a> |
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| <li class="chapter " data-level="1.5.20" data-path="demos/隐式参数.md"> |
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| 4.21 隐式参数 |
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| </a> |
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| <li class="chapter " data-level="1.5.21" data-path="demos/异步调用.html"> |
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| <a href="demos/异步调用.html"> |
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| 4.22 异步调用 |
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| </a> |
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| <li class="chapter " data-level="1.5.22" data-path="demos/本地调用.html"> |
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| <a href="demos/本地调用.html"> |
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| 4.23 本地调用 |
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| </a> |
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| <li class="chapter " data-level="1.5.23" data-path="demos/参数回调.html"> |
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| 4.24 参数回调 |
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| </a> |
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| 4.25 事件通知 |
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| </a> |
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| 4.26 本地存根 |
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| </a> |
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| <li class="chapter " data-level="1.5.26" data-path="demos/本地伪装.html"> |
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| <a href="demos/本地伪装.html"> |
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| 4.27 本地伪装 |
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| </a> |
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| <li class="chapter " data-level="1.5.27" data-path="demos/延迟暴露.html"> |
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| <a href="demos/延迟暴露.html"> |
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| 4.28 延迟暴露 |
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| </a> |
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| <li class="chapter " data-level="1.5.28" data-path="demos/并发控制.html"> |
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| <a href="demos/并发控制.html"> |
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| 4.29 并发控制 |
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| </a> |
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| <li class="chapter " data-level="1.5.29" data-path="demos/连接控制.html"> |
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| <a href="demos/连接控制.html"> |
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| 4.30 连接控制 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.30" data-path="demos/延迟连接.html"> |
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| <a href="demos/延迟连接.html"> |
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| 4.31 延迟连接 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.31" data-path="demos/粘滞连接.html"> |
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| <a href="demos/粘滞连接.html"> |
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| 4.32 粘滞连接 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.32" data-path="demos/令牌验证.html"> |
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| <a href="demos/令牌验证.html"> |
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| 4.33 令牌验证 |
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| </a> |
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| <li class="chapter " data-level="1.5.33" data-path="demos/路由规则.html"> |
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| <a href="demos/路由规则.html"> |
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| 4.34 路由规则 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.34" data-path="demos/配置规则.html"> |
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| <a href="demos/配置规则.html"> |
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| 4.35 配置规则 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.35" data-path="demos/服务降级.html"> |
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| <a href="demos/服务降级.html"> |
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| 4.36 服务降级 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.36" data-path="demos/优雅停机.html"> |
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| <a href="demos/优雅停机.html"> |
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| 4.37 优雅停机 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.37" data-path="demos/主机绑定.html"> |
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| <a href="demos/主机绑定.html"> |
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| 4.38 主机绑定 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.38" data-path="demos/日志适配.html"> |
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| <a href="demos/日志适配.html"> |
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| 4.39 日志适配 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.39" data-path="demos/访问日志.html"> |
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| <a href="demos/访问日志.html"> |
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| 4.40 访问日志 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.40" data-path="demos/服务容器.html"> |
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| <a href="demos/服务容器.html"> |
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| 4.41 服务容器 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.41" data-path="demos/ReferenceConfig缓存.html"> |
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| <a href="demos/ReferenceConfig缓存.html"> |
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| 4.42 Reference Config缓存 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.42" data-path="demos/分布式事务.html"> |
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| <a href="demos/分布式事务.html"> |
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| 4.43 分布式事务 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.5.43" data-path="reference-apiconf/api.html"> |
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| <a href="reference-apiconf/api.html"> |
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| 5 API参考手册 |
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| </a> |
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| </li> |
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| </ul> |
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| </li> |
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| <li class="chapter " data-level="1.6" data-path="reference-xmlconf/introduction.html"> |
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| <a href="reference-xmlconf/introduction.html"> |
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| 5 schema配置参考手册 |
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| </a> |
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| <ul class="articles"> |
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| <li class="chapter " data-level="1.6.1" data-path="reference-xmlconf/dubbo-service.html"> |
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| <a href="reference-xmlconf/dubbo-service.html"> |
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| 5.1 dubbo:service |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.2" data-path="reference-xmlconf/dubbo-reference.html"> |
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| <a href="reference-xmlconf/dubbo-reference.html"> |
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| 5.2 dubbo:reference |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.3" data-path="reference-xmlconf/dubbo-protocol.html"> |
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| <a href="reference-xmlconf/dubbo-protocol.html"> |
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| 5.3 dubbo:protocol |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.4" data-path="reference-xmlconf/dubbo-registry.html"> |
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| <a href="reference-xmlconf/dubbo-registry.html"> |
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| 5.4 dubbo:registry |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.5" data-path="reference-xmlconf/dubbo-monitor.html"> |
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| <a href="reference-xmlconf/dubbo-monitor.html"> |
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| 5.5 dubbo:monitor |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.6" data-path="reference-xmlconf/dubbo-application.html"> |
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| <a href="reference-xmlconf/dubbo-application.html"> |
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| 5.6 dubbo:application |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.7" data-path="reference-xmlconf/dubbo-module.html"> |
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| <a href="reference-xmlconf/dubbo-module.html"> |
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| 5.7 dubbo:module |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.8" data-path="reference-xmlconf/dubbo-provider.html"> |
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| <a href="reference-xmlconf/dubbo-provider.html"> |
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| 5.8 dubbo:provider |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.9" data-path="reference-xmlconf/dubbo-consumer.html"> |
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| <a href="reference-xmlconf/dubbo-consumer.html"> |
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| 5.9 dubbo:consumer |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.10" data-path="reference-xmlconf/dubbo-method.html"> |
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| <a href="reference-xmlconf/dubbo-method.html"> |
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| 5.10 dubbo:method |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.11" data-path="reference-xmlconf/dubbo-argument.html"> |
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| <a href="reference-xmlconf/dubbo-argument.html"> |
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| 5.11 dubbo:argument |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.6.12" data-path="reference-xmlconf/dubbo-parameter.html"> |
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| <a href="reference-xmlconf/dubbo-parameter.html"> |
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| 5.12 dubbo:parameter |
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| </a> |
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| </li> |
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| </ul> |
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| <li class="chapter " data-level="1.7" data-path="reference-protocol/introduction.html"> |
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| <a href="reference-protocol/introduction.html"> |
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| 6 协议参考手册 |
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| </a> |
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| <ul class="articles"> |
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| <li class="chapter " data-level="1.7.1" data-path="reference-protocol/dubbo.html"> |
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| <a href="reference-protocol/dubbo.html"> |
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| 6.1 dubbo:// |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.7.2" data-path="reference-protocol/rmi.html"> |
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| <a href="reference-protocol/rmi.html"> |
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| 6.2 rmi// |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.7.3" data-path="reference-protocol/hessian.html"> |
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| <a href="reference-protocol/hessian.html"> |
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| 6.3 hessian:// |
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| </a> |
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| <li class="chapter " data-level="1.7.4" data-path="reference-protocol/http.html"> |
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| 6.4 http:// |
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| <li class="chapter " data-level="1.7.5" data-path="reference-protocol/webservice.html"> |
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| 6.5 webservice:// |
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| </a> |
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| <li class="chapter " data-level="1.7.6" data-path="reference-protocol/thrift.html"> |
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| <a href="reference-protocol/thrift.html"> |
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| 6.6 thrift:// |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.7.7" data-path="reference-protocol/memcached.html"> |
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| <a href="reference-protocol/memcached.html"> |
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| 6.7 memcached:// |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.7.8" data-path="reference-protocol/redis.html"> |
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| <a href="reference-protocol/redis.html"> |
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| 6.8 redis:// |
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| </a> |
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| </li> |
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| </ul> |
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| <li class="chapter " data-level="1.8" data-path="reference-registry/introduction.html"> |
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| <a href="reference-registry/introduction.html"> |
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| 7 注册中心参考手册 |
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| </a> |
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| <ul class="articles"> |
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| <li class="chapter " data-level="1.8.1" data-path="reference-registry/multicast.html"> |
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| <a href="reference-registry/multicast.html"> |
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| 7.1 Multicast注册中心 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.8.2" data-path="reference-registry/zookeeper.html"> |
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| <a href="reference-registry/zookeeper.html"> |
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| 7.2 Zookeeper注册中心 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.8.3" data-path="reference-registry/redis.html"> |
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| <a href="reference-registry/redis.html"> |
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| 7.3 Redis注册中心 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.8.4" data-path="reference-registry/simple.html"> |
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| <a href="reference-registry/simple.html"> |
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| 7.4 Simple注册中心 |
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| </a> |
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| </li> |
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| </ul> |
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| <a href="reference-telnet/telnet.html"> |
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| 8 telnet命令参考手册 |
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| </a> |
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| </li> |
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| <li class="chapter " data-level="1.10" data-path="reference-maven/maven.html"> |
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| <a href="reference-maven/maven.html"> |
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| 9 maven插件参考手册 |
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| </a> |
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| 10 服务化最佳实践 |
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| 11 推荐用法 |
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| 12 容量规划 |
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| 13 基准测试工具包 |
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| 14 性能测试报告 |
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| </a> |
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| 15 测试覆盖率报告 |
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| <!-- Title --> |
| <h1> |
| <i class="fa fa-circle-o-notch fa-spin"></i> |
| <a href="." >14 性能测试报告</a> |
| </h1> |
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| <h4 id="测试说明">测试说明</h4> |
| <ol> |
| <li>本次性能测试，测试了dubbo2.0所有支持的协议在不同大小和数据类型下的表现，并与dubbo1.0进行了对比。</li> |
| <li>整体性能相比1.0有了提升，平均提升10%，使用dubbo2.0新增的dubbo序列化还能获得10%~50%的性能提升，详见下面的性能数据。</li> |
| <li>稳定性测试中由于将底层通信框架从mina换成netty，old区对象的增长大大减少，50小时运行，增长不到200m，无fullgc。（可以确认为mina在高并发下的设计缺陷）</li> |
| <li>存在的问题：在50k数据的时候2.0性能不如1.0，怀疑可能是缓冲区设置的问题，下版本会进一步确认。 </li> |
| </ol> |
| <h4 id="测试环境">测试环境</h4> |
| <h5 id="硬件部署与参数调整">硬件部署与参数调整</h5> |
| <table> |
| <thead> |
| <tr> |
| <th>机型</th> |
| <th>CPU</th> |
| <th>内存</th> |
| <th>网络</th> |
| <th>磁盘</th> |
| <th>内核</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td>Tecal BH620</td> |
| <td>model name : Intel(R) Xeon(R) CPU E5520 @ 2.27GHz cache size : 8192 KB processor_count : 16</td> |
| <td>Total System Memory: 6G Hardware Memory Info: Size: 4096MB</td> |
| <td>eth0: Link is up at 1000 Mbps, full duplex. peth0: Link is up at 1000 Mbps, full duplex.</td> |
| <td>/dev/sda: 597.9 GB</td> |
| <td>2.6.18-128.el5xen x86_64</td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 id="软件架构">软件架构</h5> |
| <table> |
| <thead> |
| <tr> |
| <th>软件名称及版本</th> |
| <th>关键参数</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td>java version "1.6.0_18" Java(TM) SE Runtime Environment (build 1.6.0_18-b07) Java HotSpot(TM) 64-Bit Server VM (build 16.0-b13, mixed mode)</td> |
| <td>-server -Xmx2g -Xms2g -Xmn256m -XX:PermSize=128m -Xss256k -XX:+DisableExplicitGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:LargePageSizeInBytes=128m -XX:+UseFastAccessorMethods -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=70</td> |
| </tr> |
| <tr> |
| <td>jboss-4.0.5.GA</td> |
| <td></td> |
| </tr> |
| <tr> |
| <td>httpd-2.0.61</td> |
| <td>KeepAlive On MaxKeepAliveRequests 100000 KeepAliveTimeout 180 MaxRequestsPerChild 1000000 <ifmodule worker.c=""> StartServers 5 MaxClients 1024 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 64 ThreadLimit 128 ServerLimit 16 </ifmodule></td> |
| </tr> |
| </tbody> |
| </table> |
| <h4 id="测试目的">测试目的</h4> |
| <h5 id="期望性能指标量化">期望性能指标(量化)</h5> |
| <table> |
| <thead> |
| <tr> |
| <th>场景名称</th> |
| <th>对应指标名称</th> |
| <th>期望值范围</th> |
| <th>实际值</th> |
| <th>是否满足期望(是/否)</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td>1k数据</td> |
| <td>响应时间</td> |
| <td>0.9ms</td> |
| <td>0.79ms</td> |
| <td>是 </td> |
| </tr> |
| <tr> |
| <td>1k数据</td> |
| <td>TPS</td> |
| <td>10000</td> |
| <td>11994</td> |
| <td>是</td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 id="期望运行状况非量化，可选">期望运行状况(非量化，可选)</h5> |
| <ul> |
| <li>2.0性能不低于1.0,2.0和1.0互调用的性能无明显下降。 除了50k string其余皆通过</li> |
| <li>JVM内存运行稳定，无OOM，堆内存中无不合理的大对象的占用。通过</li> |
| <li>CPU、内存、网络、磁盘、文件句柄占用平稳。通过</li> |
| <li>无频繁线程锁，线程数平稳。通过</li> |
| <li>业务线程负载均衡。通过</li> |
| </ul> |
| <h4 id="测试脚本">测试脚本</h4> |
| <ol> |
| <li><p>性能测试场景（10并发）</p> |
| <ul> |
| <li>传入1kString，不做任何处理，原样返回</li> |
| <li>传入50kString，不做任何处理，原样返回</li> |
| <li>传入200kString，不做任何处理，原样返回</li> |
| <li><p>传入1k pojo（嵌套的复杂person对象），不做任何处理，原样返回</p> |
| <p>上述场景在dubbo1.0\dubbo2.0(hessian2序列化)\dubbo2.0(dubbo序列化)\rmi\hessian3.2.0\http(json序列化)进行10分钟的性能测试。 主要考察序列化和网络IO的性能，因此服务端无任何业务逻辑。取10并发是考虑到http协议在高并发下对CPU的使用率较高可能会先打到瓶颈。 </p> |
| </li> |
| </ul> |
| </li> |
| <li>并发场景（20并发） |
| 传入1kString，在服务器段循环1w次，每次重新生成一个随机数然后进行拼装。考察业务线程是否能够分配到每个CPU上。 </li> |
| <li>稳定性场景（20并发） |
| 同时调用1个参数为String（5k）方法，1个参数为person对象的方法，1个参数为map（值为3个person）的方法，持续运行50小时。 </li> |
| <li>高压力场景（20并发） |
| 在稳定性场景的基础上，将提供者和消费者布置成均为2台（一台机器2个实例），且String的参数从20byte到200k，每隔10分钟随机变换。 </li> |
| </ol> |
| <h4 id="测试结果">测试结果</h4> |
| <h5 id="场景名称：pojo-场景">场景名称：POJO 场景</h5> |
| <table> |
| <thead> |
| <tr> |
| <th></th> |
| <th>TPS成功平均值</th> |
| <th>响应时间成功平均值(ms) </th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td> dubbo1 (hessian2序列化+mina)</td> |
| <td>10813.5</td> |
| <td>0.9 </td> |
| </tr> |
| <tr> |
| <td> dubbo2 (hessian2序列化+netty)</td> |
| <td>11994</td> |
| <td>0.79 </td> |
| </tr> |
| <tr> |
| <td> dubbo2 (dubbo序列化+netty)</td> |
| <td>13620</td> |
| <td>0.67 </td> |
| </tr> |
| <tr> |
| <td> rmi</td> |
| <td>2461.79</td> |
| <td>4 </td> |
| </tr> |
| <tr> |
| <td> hessian</td> |
| <td>2417.7</td> |
| <td>4.1 </td> |
| </tr> |
| <tr> |
| <td> http（json序列化）</td> |
| <td>8179.08</td> |
| <td>1.15 </td> |
| </tr> |
| <tr> |
| <td> 2.0和1.0默认对比百分比</td> |
| <td>10.92</td> |
| <td>-12.22 </td> |
| </tr> |
| <tr> |
| <td> dubbo序列化相比hessian2序列化百分比</td> |
| <td>13.56</td> |
| <td>-15.19 </td> |
| </tr> |
| </tbody> |
| </table> |
| <p><strong>POJO TPS</strong></p> |
| <p><img src="sources/images/pojotps.png" alt="/user-guide/images/pojotps.png"></p> |
| <p><strong>POJO Response</strong></p> |
| <p><img src="sources/images/pojores.png" alt="/user-guide/images/pojores.png"></p> |
| <h5 id="场景名称：1k-string-场景">场景名称：1k string 场景</h5> |
| <table> |
| <thead> |
| <tr> |
| <th></th> |
| <th>TPS成功平均值</th> |
| <th>响应时间成功平均值(ms) </th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td>dubbo1（hessian2序列化+mina）</td> |
| <td>11940</td> |
| <td>0.8 </td> |
| </tr> |
| <tr> |
| <td>dubbo2 (hessian2序列化+netty)</td> |
| <td>14402</td> |
| <td>0.64 </td> |
| </tr> |
| <tr> |
| <td>dubbo2 (dubbo序列化+netty)</td> |
| <td>15096</td> |
| <td>0.6 </td> |
| </tr> |
| <tr> |
| <td>rmi</td> |
| <td>11136.02</td> |
| <td>0.81 </td> |
| </tr> |
| <tr> |
| <td>hessian</td> |
| <td>11426.83</td> |
| <td>0.79 </td> |
| </tr> |
| <tr> |
| <td>http（json序列化）</td> |
| <td>8919.27</td> |
| <td>1.04 </td> |
| </tr> |
| <tr> |
| <td>2.0和1.0默认对比百分比</td> |
| <td>20.62</td> |
| <td>-20.00 </td> |
| </tr> |
| <tr> |
| <td>dubbo序列化相比hessian2序列化百分比</td> |
| <td>4.82</td> |
| <td>-6.25 </td> |
| </tr> |
| </tbody> |
| </table> |
| <p><strong>1k TPS</strong></p> |
| <p><img src="sources/images/1ktps.png" alt="/user-guide/images/1ktps.png"></p> |
| <p><strong>1k Response</strong></p> |
| <p><img src="sources/images/1kres.png" alt="/user-guide/images/1kres.png"></p> |
| <h5 id="场景名称：50k-string场景">场景名称：50k string场景</h5> |
| <table> |
| <thead> |
| <tr> |
| <th></th> |
| <th>TPS成功平均值</th> |
| <th>响应时间成功平均值(ms) </th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td> dubbo1（hessian2序列化+mina</td> |
| <td>1962.7</td> |
| <td>5.1 </td> |
| </tr> |
| <tr> |
| <td> dubbo2 (hessian2序列化+netty)</td> |
| <td>1293</td> |
| <td>5.03 </td> |
| </tr> |
| <tr> |
| <td> dubbo2 (dubbo序列化+netty)</td> |
| <td>1966</td> |
| <td>7.68 </td> |
| </tr> |
| <tr> |
| <td> rmi</td> |
| <td>3349.88</td> |
| <td>2.9 </td> |
| </tr> |
| <tr> |
| <td> hessian</td> |
| <td>1925.33</td> |
| <td>5.13 </td> |
| </tr> |
| <tr> |
| <td> http（json序列化）</td> |
| <td>3247.1</td> |
| <td>3 </td> |
| </tr> |
| <tr> |
| <td> 2.0和1.0默认对比百分比</td> |
| <td>-34.12</td> |
| <td>-1.37 </td> |
| </tr> |
| <tr> |
| <td> dubbo序列化相比hessian2序列化百分比</td> |
| <td>52.05</td> |
| <td>52.68 </td> |
| </tr> |
| </tbody> |
| </table> |
| <p><strong>50K TPS</strong></p> |
| <p><img src="sources/images/50ktps.png" alt="/user-guide/images/50ktps.png"></p> |
| <p><strong>50K Response</strong></p> |
| <p><a href="sources/images/50kres.png">/user-guide/images/50kres.png</a></p> |
| <h5 id="场景名称：200k-string-场景">场景名称：200k string 场景</h5> |
| <table> |
| <thead> |
| <tr> |
| <th></th> |
| <th>TPS成功平均值</th> |
| <th>响应时间成功平均值(ms) </th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td> dubbo1（hessian2序列化+mina）</td> |
| <td>324.2</td> |
| <td>30.8 </td> |
| </tr> |
| <tr> |
| <td> dubbo2 (hessian2序列化+netty)</td> |
| <td>362.92</td> |
| <td>27.49 </td> |
| </tr> |
| <tr> |
| <td> dubbo2 (dubbo序列化+netty)</td> |
| <td>569.5</td> |
| <td>17.51 </td> |
| </tr> |
| <tr> |
| <td> rmi</td> |
| <td>1031.28</td> |
| <td>9.61</td> |
| </tr> |
| <tr> |
| <td> hessian</td> |
| <td>628.06</td> |
| <td>15.83 </td> |
| </tr> |
| <tr> |
| <td> http（json序列化）</td> |
| <td>1011.97</td> |
| <td>9.79 </td> |
| </tr> |
| <tr> |
| <td> 2.0和1.0默认对比百分比</td> |
| <td>11.94</td> |
| <td>-10.75 </td> |
| </tr> |
| <tr> |
| <td> dubbo序列化相比hessian2序列化百分比</td> |
| <td>56.92</td> |
| <td>-36.30 </td> |
| </tr> |
| </tbody> |
| </table> |
| <p><strong>200K TPS</strong></p> |
| <p><img src="sources/images/200ktps.png" alt="/user-guide/images/200ktps.png"></p> |
| <p><strong>200K Response</strong></p> |
| <p><img src="sources/images/200kres.png" alt="/user-guide/images/200kres.png"></p> |
| <h4 id="测试分析">测试分析</h4> |
| <h5 id="性能分析评估">性能分析评估</h5> |
| <p>Dubbo2.0的性能测试结论为通过，从性能、内存占用和稳定性上都有了提高和改进。由其是内存管理由于将mina换成netty，大大减少了1.0版本在高并发大数据下的内存大锯齿。如下图：</p> |
| <h5 id="性能对比分析新旧环境、不同数据量级等">性能对比分析(新旧环境、不同数据量级等)</h5> |
| <p>Dubbo2.0相比较Dubbo1.0（默认使用的都是hessian2序列化）性能均有提升（除了50k String），详见第五章的性能数据。</p> |
| <p>出于兼容性考虑默认的序列化方式和1.0保持一致使用hessian2，如对性能有更高要求可以使用dubbo序列化，由其是在处理复杂对象时，在大数据量下能获得50%的提升（但此时已不建议使用Dubbo协议）。</p> |
| <p>Dubbo的设计目的是为了满足高并发小数据量的rpc调用，在大数据量下的性能表现并不好，建议使用rmi或http协议。</p> |
| <h5 id="测试局限性分析（可选）">测试局限性分析（可选）</h5> |
| <p>本次性能测试考察的是dubbo本身的性能，实际使用过程中的性能有待应用来验证。</p> |
| <p>由于dubbo本身的性能占用都在毫秒级，占的基数很小，性能提升可能对应用整体的性能变化不大。</p> |
| <p>由于邮件篇幅所限没有列出所有的监控图，如需获得可在大力神平台上查询。</p> |
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