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<book lang="en">
<section id="s2.4"><title>Binary Package Cache (srcpkgcache.bin and pkgcache.bin)</title>
<para>
Please see cache.sgml for a complete description of what this file
-is. The cache file is updated whenever the contents of the lists
-directory changes. If the cache is erased, corrupted or of a non-matching
+is. The cache file is updated whenever the Packages or Release files of the lists
+directory or the dpkg status file changes. If the cache is erased, corrupted or of a non-matching
version it will be automatically rebuilt by all of the tools that need
it. <emphasis>srcpkgcache.bin</emphasis> contains a cache of all of the
-package files in the source list. This allows regeneration of the cache
+package, release files in the source list. In comparison to <emphasis>pkgcache.bin</emphasis>, it does not include the /var/lib/dpkg/status file. This allows regeneration of the cache
when the status files change to use a prebuilt version for greater speed.
</para>
</section>