id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
10139	improve HTTP caching	bastiK	team	"JOSM does not properly use HTTP mechanisms for caching, like `If-Modified-Since` and `If-None-Match` (etag).

For TMS, there is some code in OsmFileCacheTileLoader, but I think it isn't called as intended."	enhancement	closed	normal	15.05	Core		fixed