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<section id="which-database-backend-should-i-use-for-which-databases">
<h1>Which database backend should I use for which databases?<a class="headerlink" href="#which-database-backend-should-i-use-for-which-databases" title="Permalink to this heading"></a></h1>
<p>Here's a brief summary of the major database types:</p>
<ul class="simple">
<li><p><strong>Skiplist</strong>: Proprietary Cyrus Format, fast enumeration, moderately fast write, moderately fast random access, binary support</p></li>
<li><p><strong>Flat</strong>: Easy to maintain format, fast enumeration, very slow write, moderate random access, no binary support</p></li>
</ul>
<p>The default database backend for each database is the type currently
recommended by the Cyrus developers. Please reference the
<a class="reference internal" href="../manpages/configs/imapd.conf.html#std-cyrusman-imapd.conf-5">imapd.conf(5)</a> manpage for your version of Cyrus imapd to see
what the defaults are.</p>
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