A <a href="http://www.xml-sitemaps.com/validate-xml-sitemap.html" target="_blank">compliant</a> sitemap can be used to specify the pages to maintain in the primed cache. Pages will be cached according to the priorities specified in the <acronym title="Extensible Markup Language">XML</acronym> file. Due to its completeness and integrations, <a href="http://wordpress.org/extend/plugins/wordpress-seo/" target="_blank">WordPress SEO</a> is recommended for use with this feature.