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<h1>ZooKeeper: Because Coordinating Distributed Systems is a Zoo</h1>
    
<p>
ZooKeeper is a high-performance coordination service for distributed applications. 
It exposes common services - such as naming, configuration management, synchronization, 
and group services - in a simple interface so you don't have to write them from scratch. 
You can use it off-the-shelf to implement consensus, group management, leader election, 
and presence protocols. And you can build on it for your own, specific needs.
</p>


<p>
The following documents describe concepts and procedures to get you started using ZooKeeper. If you have more questions, please ask the <a href="http://hadoop.apache.org/zookeeper/mailing_lists.html">mailing list</a> or browse the archives.
</p>
    
<ul>

      
<li>
<strong>ZooKeeper Overview</strong>
<p>Technical Overview Documents for Client Developers, Adminstrators, and Contributors</p>
      
<ul>
<li>
<a href="zookeeperOver.html">Overview</a> - a bird's eye view of ZooKeeper, including design concepts and architecture</li>
      
<li>
<a href="zookeeperStarted.html">Getting Started</a> - a tutorial-style guide for developers to install, run, and program to ZooKeeper</li>
      
</ul>
      
</li>
      
      
<li>
<strong>Developers</strong>
<p> Documents for Developers using the ZooKeeper Client API</p>
      
<ul>
            
<li>
<a href="api/index.html">API Docs</a> - the technical reference to ZooKeeper Client APIs</li>
      
<li>
<a href="zookeeperProgrammers.html">Programmer's Guide</a> - a client application developer's guide to ZooKeeper</li>
      
<li>
<a href="javaExample.html">ZooKeeper Java Example</a> - a simple Zookeeper client appplication, written in Java</li>
      
<li>
<a href="zookeeperTutorial.html">Barrier and Queue Tutorial</a> - sample implementations of barriers and queues</li>  
      
<li>
<a href="recipes.html">ZooKeeper Recipes</a> - higher level solutions to common problems in distributed applications</li>
      
</ul>
      
</li>
      
      
<li>
<strong>Administrators &amp; Operators</strong> 
<p> Documents for Administrators and Operations Engineers of ZooKeeper Deployments</p>
      
<ul>
      
<li>
<a href="zookeeperAdmin.html">Administrator's Guide</a> - a guide for system administrators and anyone else who might deploy Zookeeer</li>
      
</ul>
      
</li>
      
      
<li>
<strong>Contributors</strong>
<p> Documents for Developers Contributing to the ZooKeeper Open Source Project</p>
      
<ul>
      
<li>
<a href="zookeeperInternals.html">ZooKeeper Internals</a> - assorted topics on the inner workings of ZooKeeper</li>
      
</ul>
      
</li>
      
      
<li>
<strong>Informal Documentation</strong>
<p> Miscellaneous, Informal ZooKeeper Documentation</p>
      
<ul>
      
<li>
<a href="http://wiki.apache.org/hadoop/ZooKeeper">Wiki</a>
</li>
      
<li>
<a href="http://wiki.apache.org/hadoop/ZooKeeper/FAQ">FAQ</a>
</li>    
      
</ul>
      
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