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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="introduction-backends"></a>Backends</h2></div></div></div>
<p>
A backend is just a compiled <code class="literal">.so</code> object that is
loaded at run-time and provides an interface to the underlying package
commands.
A backend converts an asynchronous request into either a new thread
in the same process, or executes external "glue" files that
can be written in any language.
</p>
<p>
Backends do not have to support all of the commands supported
by PackageKit. Each backend advertises the commands and
options it supports, and the frontend will only show UI
elements for those commands.
Please see the <code class="literal">html/pk-faq.html</code> file for the current
status of the existing backends.
Backed maintainers, please keep this file updated.
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