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20 lines
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<title>17. External Configuration: Archaius</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud.html" title="Spring Cloud"><link rel="up" href="multi__spring_cloud_netflix.html" title="Part III. Spring Cloud Netflix"><link rel="prev" href="multi_spring-cloud-ribbon.html" title="16. Client Side Load Balancer: Ribbon"><link rel="next" href="multi__router_and_filter_zuul.html" title="18. Router and Filter: Zuul"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">17. External Configuration: Archaius</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_spring-cloud-ribbon.html">Prev</a> </td><th width="60%" align="center">Part III. Spring Cloud Netflix</th><td width="20%" align="right"> <a accesskey="n" href="multi__router_and_filter_zuul.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h2 class="title"><a name="_external_configuration_archaius" href="#_external_configuration_archaius"></a>17. External Configuration: Archaius</h2></div></div></div><p><a class="link" href="https://github.com/Netflix/archaius" target="_top">Archaius</a> is the Netflix client-side configuration library.
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It is the library used by all of the Netflix OSS components for configuration.
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Archaius is an extension of the <a class="link" href="http://commons.apache.org/proper/commons-configuration" target="_top">Apache Commons Configuration</a> project.
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It allows updates to configuration by either polling a source for changes or by letting a source push changes to the client.
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Archaius uses Dynamic<Type>Property classes as handles to properties, as shown in the following example:</p><p><b>Archaius Example. </b>
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</p><pre class="programlisting"><span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> ArchaiusTest {
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DynamicStringProperty myprop = DynamicPropertyFactory
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.getInstance()
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.getStringProperty(<span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"my.prop"</span>);
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<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">void</span> doSomething() {
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OtherClass.someMethod(myprop.get());
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}
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}</pre><p>
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</p><p>Archaius has its own set of configuration files and loading priorities.
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Spring applications should generally not use Archaius directly, but the need to configure the Netflix tools natively remains.
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Spring Cloud has a Spring Environment Bridge so that Archaius can read properties from the Spring Environment.
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This bridge allows Spring Boot projects to use the normal configuration toolchain while letting them configure the Netflix tools as documented (for the most part).</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_spring-cloud-ribbon.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="multi__spring_cloud_netflix.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="multi__router_and_filter_zuul.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">16. Client Side Load Balancer: Ribbon </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud.html">Home</a></td><td width="40%" align="right" valign="top"> 18. Router and Filter: Zuul</td></tr></table></div></body></html> |