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<a href="/docs/3.0.0-alpha/sql/calcite-based-sql-engine" class='' >Calcite-Based SQL Engine</a>
</li>
<li>
<a href="/docs/3.0.0-alpha/sql/jdbc-driver" class='' >JDBC Driver</a>
</li>
<li>
<a href="/docs/3.0.0-alpha/binary-protocol" class='' >Binary Client Protocol</a>
</li>
<li>
<a href="/docs/3.0.0-alpha/persistence" class='' >Native Persistence</a>
</li>
<li>
<a href="/docs/3.0.0-alpha/rebalance" class='' >Data Rebalancing</a>
</li>
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<a class='edit-link' href="https://github.com/apache/ignite/tree/IGNITE-7595/docs/_docs/index.adoc" target="_blank">Edit</a>
<h1>Apache Ignite Documentation</h1>
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p>Apache Ignite is a distributed database for high-performance computing with in-memory speed.</p>
</div>
<div class="paragraph">
<p>The technical documentation introduces you to the key capabilities, shows how to use certain features of
the current Apache Ignite version.</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<div class="title">Note</div>
</td>
<td class="content">
Though this alpha release version does not support most of the Apache Ignite functionality,
it introduces several new features, which are to be accompanied with other improvements from the <a href="https://cwiki.apache.org/confluence/display/IGNITE/Proposals+for+Ignite+3.0" target="_blank" rel="noopener">Ignite Enhancement Proposal</a> list.
</td>
</tr>
</table>
</div>
<div class="paragraph">
<p>This alpha version of Apache Ignite, incorporating all the best solutions over the past years,
possesses the highest level of usability thanks to the following improvements:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Schema-first approach: This feature introduces one-to-one mapping between data schemas and caches/tables, which means that the schema is defined for a cache/table before its creation.</p>
</li>
<li>
<p>Unified Configuration: This feature is presented by a set of the following improvements:</p>
<div class="ulist">
<ul>
<li>
<p>Platform-agnostic configuration representation</p>
</li>
<li>
<p>Clear separation between configuration and any third-party code</p>
</li>
<li>
<p>Predictable configuration lifecycle</p>
</li>
<li>
<p>Consistent runtime configuration change support</p>
</li>
</ul>
</div>
</li>
<li>
<p>Ignite CLI tool: This tool functions as a single sign-on for any operational, management, and development needs.</p>
</li>
<li>
<p>See a <a href="https://cwiki.apache.org/confluence/display/IGNITE/Proposals+for+Ignite+3.0" target="_blank" rel="noopener">full list of improvements</a>.</p>
</li>
</ul>
</div>
</div>
</div>
<div class="sect1">
<h2 id="new-in-alpha-3">New in Alpha 3</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Apache Ignite Alpha 3 comes with the following new features:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>New SQL engine based on Apache Calcite with implemented JDBC driver;</p>
</li>
<li>
<p>Persistence implementation based on RocksDB;</p>
</li>
<li>
<p>New binary client protocol with an implementation in Java;</p>
</li>
<li>
<p>Data rebalancing.</p>
</li>
</ul>
</div>
</div>
</div>
<div class="copyright">
© 2021 The Apache Software Foundation.<br/>
Apache, Apache Ignite, the Apache feather and the Apache Ignite logo are either registered trademarks or trademarks of The Apache Software Foundation.
</div>
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