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<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第一章 基本介绍</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/1.1quickstart.html" class="sidebar-link">1.1 快速开始</a></li><li><a href="/juno/1.2install_docker.html" class="sidebar-link">Docker</a></li><li><a href="/juno/1.3install_binary.html" class="sidebar-link">1.3 二进制安装</a></li><li><a href="/juno/1.4install_docker_compose.html" class="sidebar-link">1.4 docker-compose 安装</a></li><li><a href="/juno/1.5quickuse.html" class="sidebar-link">1.5 平台使用介绍</a></li><li><a href="/juno/1.6contribution.html" class="sidebar-link">1.6 参与JUNO开发</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第二章 资源中心</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/2.1intro.html" class="sidebar-link">2.1 资源中心介绍</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第三章 配置中心</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/3.1intro.html" class="sidebar-link">3.1 配置中心介绍</a></li><li><a href="/juno/3.2feature.html" class="sidebar-link">3.2 配置中心特点</a></li><li><a href="/juno/3.3design.html" class="sidebar-link">3.3 配置中心设计</a></li><li><a href="/juno/3.4ui.html" class="sidebar-link">3.4 交互设计</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第四章 治理中心</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/4.1govern.html" class="sidebar-link">4.1 治理中心</a></li><li><a href="/juno/4.2pprof.html" class="sidebar-link">4.2 Pprof</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第五章 监控中心</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/5.1monitor.html" class="sidebar-link">5.1 监控配置</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第六章 注册中心</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/6.1register.html" class="sidebar-link">6.1 注册中心</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第七章 任务平台</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/7.1task.html" class="sidebar-link">7.1 任务平台</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第八章 测试平台</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/8.1grpc_test.html" class="sidebar-link">8.1 GRPC 测试</a></li><li><a href="/juno/8.2http_test.html" class="sidebar-link">8.2 HTTP 测试</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>第九章 Juno-Agent</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/9.1quickstart.html" class="sidebar-link">9.1 运行和部署</a></li><li><a href="/juno/9.2configuration.html" class="sidebar-link">9.2 Agent配置</a></li><li><a href="/juno/9.3config_get.html" class="sidebar-link">13.1 JUNO AGENT</a></li><li><a href="/juno/9.4configdown.html" aria-current="page" class="active sidebar-link">9.4 应用配置下发</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/juno/9.4configdown.html#_9-4-1-配置下发流程" class="sidebar-link">9.4.1 配置下发流程</a></li></ul></li><li><a href="/juno/9.5configparse.html" class="sidebar-link">9.5 应用配置解析</a></li><li><a href="/juno/9.6agentReport.html" class="sidebar-link">9.6 agent状态上报</a></li><li><a href="/juno/9.7pmt.html" class="sidebar-link">9.7 扫描器</a></li><li><a href="/juno/9.8proxy.html" class="sidebar-link">9.3 服务代理</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第十章 日志中心</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/10.1applog.html" class="sidebar-link">10.1 日志中心</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第十一章 授权模块</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/11.1intro.html" class="sidebar-link">4.1 授权介绍</a></li><li><a href="/juno/11.2authproxy.html" class="sidebar-link">4.2 反向代理授权</a></li><li><a href="/juno/11.3gitlab.html" class="sidebar-link">4.3 Gitlab Auth</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第十二章 API文档</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/12.1apiauth.html" class="sidebar-link">12.1 API 授权</a></li><li><a href="/juno/12.2openapi.html" class="sidebar-link">12.2 Open API</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第十三章 系统设置</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/13.1system_setting.html" class="sidebar-link">14.1 系统设置</a></li><li><a href="/juno/13.2junoevent.html" class="sidebar-link">13.2 系统消息事件配置</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>第十四章 操作统计</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/juno/14.1statistics.html" class="sidebar-link">14.1 操作统计</a></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="_9-4-应用配置下发"><a href="#_9-4-应用配置下发" class="header-anchor">#</a> 9.4 应用配置下发</h1> <p>应用配置是结合<code>confgo</code>一起使用。</p> <h2 id="_9-4-1-配置下发流程"><a href="#_9-4-1-配置下发流程" class="header-anchor">#</a> 9.4.1 配置下发流程</h2> <p>配置下发流程如下所示
<img src="/assets/img/configdown1.689aefc1.png" alt="image"></p> <ul><li>用户在Juno配置中心进行配置新增或变更操作，在点击发布之后配置会同步到机房代理服务（Juno Proxy），再将配置数据写入机房内的ETCD中；</li> <li>客户端（Juno Agent）监听 ETCD 的数据变化来更新配置数据；</li> <li>客户端（Juno Agent）从配置中心获取到应用程序相关的最新版本配置文件后，更新本地的内存缓存；</li> <li>客户端（Juno Agent）在更新内存缓存的同时会在本地文件系统中缓存一份，在服务不可用或者网络故障时，让应用程序直接使用本地文件配置；</li> <li>应用程序从客户端（Juno Agent）获取最新的配置。</li> <li>客户端（Juno Agent）维护应用配置的关系，通过长轮询，用户可以实时获取应用最新配置</li></ul></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/douyu/jupiter/edit/master/website/docs/juno/9.4configdown.md" target="_blank" rel="noopener noreferrer">在github.com上编辑此页</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">上次更新:</span> <span class="time">2023-10-11 03:46:14</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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