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<h1>ZooKeeper: Because Coordinating Distributed Systems is a Zoo</h1>
<div id="front-matter"></div>
    
<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>
      
<li>
<a href="releasenotes.html">Release Notes</a> - new developer and user facing features, improvements, and incompatibilities</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 ZooKeeper</li>
      
<li>
<a href="zookeeperQuotas.html">Quota Guide</a> - a guide for system administrators on Quotas in ZooKeeper. </li>
      
<li>
<a href="zookeeperJMX.html">JMX</a> - how to enable JMX in ZooKeeper</li>
      
<li>
<a href="zookeeperHierarchicalQuorums.html">Hierarchical quorums</a>
</li>
      
<li>
<a href="zookeeperObservers.html">Observers</a> - non-voting ensemble members that easily improve ZooKeeper's scalability</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>Miscellaneous ZooKeeper Documentation</strong>
      
<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>
      
</li>

	  
<li>
<strong>BookKeeper Documentation</strong>
	  
<p> BookKeeper is a highly-available system that implements high-performance write-ahead logging. It uses ZooKeeper for metadata, 
	  which is the main reason for being a ZooKeeper contrib.
	  </p>
      
<ul>
      
<li>
<a href="bookkeeperOverview.html">henn, what's it again?</a>
</li>
	  
<li>
<a href="bookkeeperStarted.html">Ok, now how do I try it out</a>
</li>
	  
<li>
<a href="bookkeeperProgrammer.html">Awesome, but how do I integrate it with my app?</a>
</li>
      
<li>
<a href="bookkeeperStream.html">Can I stream bytes instead of entries?</a>
</li>
      
</ul>
      
</li>
    
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