url file://%(curdir)s/%(datadir)s/file.css
cache key file://%(curdir)s/%(datadir)s/file.css
real url file://%(curdir)s/%(datadir)s/file.css
valid

url file.html
cache key file://%(curdir)s/%(datadir)s/file.html
real url file://%(curdir)s/%(datadir)s/file.html
valid

url file.html (cached)
cache key file://%(curdir)s/%(datadir)s/file.html
real url file://%(curdir)s/%(datadir)s/file.html
valid