X-Varnish-Action HTTP response header

X-Varnish-Action

HTTP response header

X-Varnish-Action response header information and usage statistics.


Websites using header X-Varnish-Action	261
Percentage of websites that use X-Varnish-Action header	<0.1%
Total discovered header values	21
Header uses directives	No
Header values are unique or random	No
Most popular in the country	Spain

Technologies that utilize the header

Varnish, category Cache Tools, total 467,488 websites

X-Varnish-Action detection in the top websites by popularity

List of websites that use X-Varnish-Action header

Domain	Country	Rank
www.dynajet.de	Germany	31,411
www.cwi.nl	Netherlands	81,816
hcn.org	United States of America	101,888
psychology.ucdavis.edu	United States of America	105,160
www.uni-stuttgart.de	Germany	105,813
www.plu.edu	United States of America	108,372

See full domain list

Header usage distribution by websites across the globe.

List of top common X-Varnish-Action header values

Header value	Value prevalence
FETCH (pass - response sets cookie)	41.76%
FETCH (pass - not cacheable)	19.54%
HIT (deliver - from cache)	6.90%
FETCH (html)	6.51%
FETCH (pass - response sets private/no-cache/no-store token)	5.75%
FETCH (override - backend not setting cache control)	5.36%
FETCH (pass - authorized and no public cache control)	3.07%
FETCH (hit_for_pass - not cacheable)	2.68%
FETCH (deliver)	1.53%
HIT	1.15%
error	0.77%
FETCH (deliver - not cacheable)	0.77%
FETCH (insert)	0.77%
miss	0.77%
FETCH	0.38%
FETCH (deliver - default)	0.38%
FETCH (pass - admin)	0.38%
FETCH (pass - no cache directives from backend)	0.38%
FETCH (pass - redirect)	0.38%
FETCH (the rest)	0.38%