id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
20793	Add Last-Modified header to generated sitemaps	Julian Bez	Julian Bez	From each items lastmod attribute, we can infer the lastmod of the whole sitemap and set this as Last-Modified header for the sitemap. Google will then request with an If-Modified-Since header and bytes are saved.	New feature	closed	contrib.sitemaps	dev	Normal	fixed	sitemaps last modified		Accepted	1	0	0	1	0	0