Google Git
Sign in
apache / servicecomb-website / c9cefa775b816dd6ff66305ff82580aee8e7919c / . / content / cn / docs / users / invoke-control / index.html
blob: cd992dea52316245dbd714e51c8308cd523733c1 [file] [log] [blame]
<!doctype html>
<!--
Minimal Mistakes Jekyll Theme 4.4.1 by Michael Rose
Copyright 2017 Michael Rose - mademistakes.com | @mmistakes
Free for personal and commercial use under the MIT license
https://github.com/mmistakes/minimal-mistakes/blob/master/LICENSE.txt
-->
<html lang="cn" class="no-js">
<head>
<meta charset="utf-8">
<!-- begin SEO -->
<title>调用控制 - Apache ServiceComb</title>
<meta name="description" content="调用控制">
<meta name="author" content="">
<meta property="og:locale" content="cn">
<meta property="og:site_name" content="Apache ServiceComb">
<meta property="og:title" content="调用控制">
<link rel="canonical" href="https://github.com/pages/apache/incubator-servicecomb-website/cn/docs/users/invoke-control/">
<meta property="og:url" content="https://github.com/pages/apache/incubator-servicecomb-website/cn/docs/users/invoke-control/">
<meta property="og:description" content="调用控制">
<meta name="twitter:site" content="@ServiceComb">
<meta name="twitter:title" content="调用控制">
<meta name="twitter:description" content="调用控制">
<meta name="twitter:url" content="">
<meta name="twitter:card" content="summary">
<script type="application/ld+json">
{
"@context" : "http://schema.org",
"@type" : "Person",
"name" : "Apache ServiceComb",
"url" : "https://github.com/pages/apache/incubator-servicecomb-website",
"sameAs" : null
}
</script>
<meta name="google-site-verification" content="HvJjNd7vvJ-yjSTHlBiIWEYxp_Hrz-PYEY5Idz9LRcA" />
<!-- end SEO -->
<link href="/feed.xml" type="application/atom+xml" rel="alternate" title="Apache ServiceComb Feed">
<!-- http://t.co/dKP3o1e -->
<meta name="HandheldFriendly" content="True">
<meta name="MobileOptimized" content="320">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script>
document.documentElement.className = document.documentElement.className.replace(/\bno-js\b/g, '') + ' js ';
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/1.7.1/clipboard.min.js"></script>
<script src="/assets/vendor/prism/prism.js"></script>
<script type="text/javascript" async
src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-MML-AM_CHTML">
</script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js" integrity="sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script>
<!-- For all browsers -->
<link rel="stylesheet" href="/assets/css/main.css">
<link rel="stylesheet" href="/assets/vendor/prism/prism.css">
<!--[if lte IE 9]>
<style>
/* old IE unsupported flexbox fixes */
.greedy-nav .site-title {
padding-right: 3em;
}
.greedy-nav button {
position: absolute;
top: 0;
right: 0;
height: 100%;
}
</style>
<![endif]-->
<meta http-equiv="cleartype" content="on">
<!-- start custom head snippets -->
<!-- insert favicons. use http://realfavicongenerator.net/ -->
<link href="https://fonts.loli.net/css?family=Roboto:400,500,700|Source+Code+Pro" rel="stylesheet">
<script src="/assets/js/custom.js"></script>
<!-- end custom head snippets -->
</head>
<body class="layout--single">
<!--[if lt IE 9]>
<div class="notice--danger align-center" style="margin: 0;">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</div>
<![endif]-->
<div class="masthead" onmouseleave="$('#childrenShow').css('display', 'none')">
<div class="masthead__inner-wrap">
<div class="masthead__menu">
<nav id="site-nav" class="greedy-nav">
<a class="site-title active" href="/cn"><img src="https://www.apache.org/img/servicecomb.png"></a>
<ul class="visible-links">
<li class="masthead__menu-item" onmouseenter="$('#childrenShow').css('display', 'none')">
<a href="/cn/">首页</a>
</li>
<li class="masthead__menu-item" onmouseenter="$('#childrenShow').css('display', 'none')">
<a href="/cn/developers/">项目</a>
</li>
<li class="def-nav-li" onmouseenter="$('#childrenShow').css('display', 'block')">
<a class="active" href="/cn/docs/users/">文档</a>
<ul id="childrenShow" class="def-children-show-cn" onmouseleave="$('#childrenShow').css('display', 'none')">
<li><a href="/cn/docs/getting-started/" class="">入门指南</a></li>
<li><a href="/cn/docs/users/" class="">用户手册</a></li>
<li><a href="/cn/slides/" class="">大咖视频</a></li>
<li><a href="/cn/faqs/" class="">常见问题</a></li>
</ul>
</li>
<li class="masthead__menu-item" onmouseenter="$('#childrenShow').css('display', 'none')">
<a href="/cn/developers/contributing/">社区</a>
</li>
<li class="masthead__menu-item" onmouseenter="$('#childrenShow').css('display', 'none')">
<a href="/cn/year-archive/">博文</a>
</li>
<li class="masthead__menu-item" onmouseenter="$('#childrenShow').css('display', 'none')">
<a href="/cn/release/">下载</a>
</li>
</ul>
<button><div class="navicon"></div></button>
<ul class="hidden-links hidden"></ul>
<div class="nav-lang">
<a href=/docs/users/invoke-control/>English</a>
</div>
</nav>
</div>
</div>
</div>
<div id="main" role="main">
<div class="sidebar sticky">
<div class="back-to-home"><a href="/cn/">首页</a> > 调用控制</div>
<nav class="nav__list">
<input id="ac-toc" name="accordion-toc" type="checkbox" />
<label for="ac-toc">切换菜单</label>
<ul class="nav__items">
<li>
<span class="nav__sub-title">Java-chassis用户手册</span>
<ul>
<li><a href="/references/java-chassis/en_US/" class="">2.3.0</a></li>
</ul>
</li>
<li>
<span class="nav__sub-title">Pack用户手册</span>
<ul>
<li><a href="https://github.com/apache/servicecomb-pack/blob/master/docs/user_guide.md" class="">0.5.0（英文版）</a></li>
</ul>
</li>
<li>
<span class="nav__sub-title">ServiceCenter用户手册</span>
<ul>
<li><a href="https://service-center.readthedocs.io/en/latest/user-guides.html" class="">2.0.0（英文版）</a></li>
</ul>
</li>
<li>
<span class="nav__sub-title">Kie 用户手册</span>
<ul>
<li><a href="https://kie.readthedocs.io/en/latest/" class="">0.2.0（英文版）</a></li>
</ul>
</li>
<li>
<span class="nav__sub-title">Mesher 用户手册</span>
<ul>
<li><a href="https://mesher.readthedocs.io/en/latest/" class="">1.6.3（英文版）</a></li>
</ul>
</li>
</ul>
</nav>
</div>
<article class="page" itemscope itemtype="http://schema.org/CreativeWork">
<meta itemprop="headline" content="调用控制">
<meta itemprop="description" content="调用控制">
<meta itemprop="dateModified" content="August 15, 2017">
<div class="page__inner-wrap">
<header>
<h1 class="page__title" itemprop="headline">调用控制
</h1>
</header>
<section class="page__content" itemprop="text">
<aside class="sidebar__right">
<nav class="toc">
<!-- <header><h4 class="nav__title"><i class="fa fa-file-text"></i> 在本页上</h4></header> -->
<ul class="toc__menu" id="markdown-toc">
<li><a href="#实例级故障隔离" id="markdown-toc-实例级故障隔离">实例级故障隔离</a> <ul>
<li><a href="#场景描述" id="markdown-toc-场景描述">场景描述</a></li>
<li><a href="#配置说明" id="markdown-toc-配置说明">配置说明</a></li>
</ul>
</li>
<li><a href="#熔断策略" id="markdown-toc-熔断策略">熔断策略</a> <ul>
<li><a href="#场景描述-1" id="markdown-toc-场景描述-1">场景描述</a></li>
<li><a href="#配置说明-1" id="markdown-toc-配置说明-1">配置说明</a></li>
</ul>
</li>
<li><a href="#限流策略" id="markdown-toc-限流策略">限流策略</a> <ul>
<li><a href="#场景描述-2" id="markdown-toc-场景描述-2">场景描述</a></li>
<li><a href="#注意事项" id="markdown-toc-注意事项">注意事项</a></li>
<li><a href="#配置说明-2" id="markdown-toc-配置说明-2">配置说明</a></li>
</ul>
</li>
</ul>
</nav>
</aside>
<h2 id="实例级故障隔离">实例级故障隔离</h2>
<h3 id="场景描述">场景描述</h3>
<p>实例级故障隔离功能允许在微服务的部分实例调用失败时，停止向故障实例发送请求，从而达到隔离故障实例的功能。</p>
<h3 id="配置说明">配置说明</h3>
<p>实例级故障隔离功能集成在负载均衡功能中，负载均衡策略的配置见<a href="/cn/users/service-configurations/#负载均衡策略">负载均衡策略</a>。负载均衡策略中，与实例级故障隔离相关的配置项见下表。</p>
<table>
<thead>
<tr>
<th style="text-align: left">配置项</th>
<th style="text-align: left">默认值</th>
<th style="text-align: left">取值范围</th>
<th style="text-align: left">是否必选</th>
<th style="text-align: left">含义</th>
<th style="text-align: left">注意</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left">servicecomb.loadbalance.isolation.enabled</td>
<td style="text-align: left">false</td>
<td style="text-align: left">Boolean</td>
<td style="text-align: left">否</td>
<td style="text-align: left">是否开启故障实例隔离功能</td>
<td style="text-align: left">-</td>
</tr>
<tr>
<td style="text-align: left">servicecomb.loadbalance.isolation.enableRequestThreshold</td>
<td style="text-align: left">20</td>
<td style="text-align: left">Integer</td>
<td style="text-align: left">否</td>
<td style="text-align: left">当实例的调用总次数达到该值时开始进入隔离逻辑门槛</td>
<td style="text-align: left">-</td>
</tr>
<tr>
<td style="text-align: left">servicecomb.loadbalance.isolation.errorThresholdPercentage</td>
<td style="text-align: left">20</td>
<td style="text-align: left">Integer，区间为(0,100]</td>
<td style="text-align: left">否</td>
<td style="text-align: left">实例故障隔离错误百分比</td>
<td style="text-align: left">-</td>
</tr>
<tr>
<td style="text-align: left">servicecomb.loadbalance.isolation.singleTestTime</td>
<td style="text-align: left">10000</td>
<td style="text-align: left">Integer</td>
<td style="text-align: left">否</td>
<td style="text-align: left">故障实例单点测试时间</td>
<td style="text-align: left"> </td>
</tr>
</tbody>
</table>
<h2 id="熔断策略">熔断策略</h2>
<h3 id="场景描述-1">场景描述</h3>
<p>熔断策略是对ServiceComb熔断功能的设置，用户通过配置熔断策略可以指定在何种条件下ServiceComb框架将终止发送请求。</p>
<h3 id="配置说明-1">配置说明</h3>
<p>熔断作为异常反应机制是降级策略的一部分，相关概念还有隔离和容错。三者的关系以及配置方式参见<a href="/cn/users/service-configurations/#降级策略">降级策略</a>。</p>
<h2 id="限流策略">限流策略</h2>
<h3 id="场景描述-2">场景描述</h3>
<p>用户在consumer端使用限流策略，可以限制发往指定微服务的请求的频率。</p>
<h3 id="注意事项">注意事项</h3>
<p>参考服务提供者处<a href="/cn/users/service-configurations/#限流策略">限流策略注意事项</a>。</p>
<h3 id="配置说明-2">配置说明</h3>
<p>限流策略配置在microservice.yaml文件中，相关配置项见下表。要开启服务消费者端的限流策略，还需要在处理链中配置消费端限流handler，配置示例如下：</p>
<div class="language-yaml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="na">servicecomb</span><span class="pi">:</span>
<span class="na">handler</span><span class="pi">:</span>
<span class="na">chain</span><span class="pi">:</span>
<span class="na">Consumer</span><span class="pi">:</span>
<span class="na">default</span><span class="pi">:</span> <span class="s">qps-flowcontrol-consumer</span>
</code></pre></div></div>
<p>QPS流控配置项说明</p>
<table>
<thead>
<tr>
<th style="text-align: left">配置项</th>
<th style="text-align: left">默认值</th>
<th style="text-align: left">取值范围</th>
<th style="text-align: left">是否必选</th>
<th style="text-align: left">含义</th>
<th style="text-align: left">注意</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left">servicecomb.flowcontrol.Consumer.qps.enabled</td>
<td style="text-align: left">true</td>
<td style="text-align: left">Boolean</td>
<td style="text-align: left">否</td>
<td style="text-align: left">是否启用Consumer流控</td>
<td style="text-align: left">-</td>
</tr>
<tr>
<td style="text-align: left">servicecomb.flowcontrol.Consumer.qps.limit.[ServiceName].[Schema].[operation]</td>
<td style="text-align: left">2147483647 (max int)</td>
<td style="text-align: left">(0,2147483647]，整形</td>
<td style="text-align: left">否</td>
<td style="text-align: left">每秒钟允许的请求数</td>
<td style="text-align: left">支持microservice、schema、operation三个级别的配置</td>
</tr>
</tbody>
</table>
</section>
<footer class="page__meta">
</footer>
</div>
</article>
</div>
<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<div align="center" style="margin: 0 0;">
<ins class="adsbygoogle"
style="display:block; border-bottom: initial;"
data-ad-client="ca-pub-7328585512091257"
data-ad-slot="3049671934"
data-ad-format="auto"></ins>
</div>
<div class="page__footer">
<footer>
<!-- start custom footer snippets -->
<!-- end custom footer snippets -->
<div class="container">
<div class="row justify-content-md-center">
<div class="col">
<ul>
<p class="header">资源</p>
<li><a href="/cn/docs/getting-started/">入门指南</a></li>
<li><a href="/cn/docs/users/">用户指南</a></li>
<li><a href="/cn/slides/">资料</a></li>
<li><a href="/cn/users/faq/">常见问题</a></li>
</ul>
</div>
<div class="col">
<ul>
<p class="header">ASF</p>
<li><a href="http://www.apache.org">基金会</a></li>
<li><a href="http://www.apache.org/licenses/">许可证</a></li>
<li><a href="http://www.apache.org/events/current-event">活动</a></li>
<li><a href="http://www.apache.org/foundation/sponsorship.html">赞助</a></li>
<li><a href="http://www.apache.org/foundation/thanks.html">鸣谢</a></li>
</ul>
</div>
<div class="col">
<ul>
<p class="header">贡献</p>
<li><a href="http://issues.apache.org/jira/browse/SCB">报告本网页问题</a></li>
<li><a href="https://github.com/apache/servicecomb-website/edit/master/_users/cn/invoke-control.md">在Github上编辑此页</a></li>
<li><a href="/cn/developers/submit-codes/">代码提交指南</a></li>
<li><a href="/cn/security">安全</a></li>
</ul>
</div>
<div class="col">
<ul class="social-icons">
<p class="header">社区</p>
<li>
<a href="mailto:dev-subscribe@servicecomb.incubator.apache.org" rel="nofollow"><span class="mail">邮件列表</span></a>
</li>
<li>
<a href="https://github.com/apache?q=ServiceComb" target="_blank"><span class="github">Github</span></a>
</li>
<li>
<a href="https://twitter.com/ServiceComb" target="_blank"><span class="twitter">Twitter</span></a>
</li>
<li>
<a href="/feed.xml" target="_blank"><span class="rss">Feed</span></a>
</li>
</ul>
</div>
</div>
</div>
<div class="page__footer-bottom">
<div>&copy; 2021 Apache ServiceComb. 技术来自于 <a href="http://jekyllrb.com" rel="nofollow">Jekyll</a> &amp; <a href="https://mademistakes.com/work/minimal-mistakes-jekyll-theme/" rel="nofollow">Minimal Mistakes</a>.</div>
<div>All other marks mentioned may be trademarks or registered trademarks of their respective owners.</div>
</div>
</footer>
</div>
<script src="/assets/js/main.min.js"></script>
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-101622733-1', 'auto');
ga('send', 'pageview');
</script>
</body>
</html>