HTTP/1.1 Cache-Control header

http-stats:
HTTP/1.1 Cache-Control header field

This standard HTTP header field is defined in RFC 2616

The Cache-Control general-header field is used to specify directives that MUST be obeyed by all caching mechanisms along the request/response chain. The directives specify behavior intended to prevent caches from adversely interfering with the request or response. These directives typically override the default caching algorithms. Cache directives are unidirectional in that the presence of a directive in a request does not imply that the same directive is to be given in the response.

Cache directives MUST be passed through by a proxy or gateway application, regardless of their significance to that application, since the directives might be applicable to all recipients along the request/response chain. It is not possible to specify a cache-directive for a specific cache.

Common Cache-Control header values:

Cache-Control: no-cache

Cache-Control: private

Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0

Cache-Control: post-check=0, pre-check=0

Cache-Control: no-store, no-cache, must-revalidate

Cache-Control: must-revalidate, no-store

Cache-Control: no-cache,no-store

Cache-Control: max-age=60

Cache-Control: no-cache, must-revalidate

Cache-Control: no-store

Cache-Control: max-age=0, must-revalidate

Cache-Control: max-age=0, no-cache

Cache-Control: no-cache, no-store, must-revalidate, max-age=0

Cache-Control: no-store, no-cache, must-revalidate, max-age=0

Cache-Control: store, no-cache, must-revalidate

Cache-Control: public

Cache-Control: max-age=86400

Cache-Control: max-age=0

Cache-Control: max-age=2592000

Cache-Control: private, max-age=0

Cache-Control: private, pre-check=0, post-check=0, max-age=0

Cache-Control: max-age=3600

Cache-Control: must-revalidate

Cache-Control: max-age=3600, public

Cache-Control: no-cache, no-store, must-revalidate

Cache-Control: max-age=600

Cache-Control: no-cache="set-cookie"

Cache-Control: private, max-age=0, must-revalidate

Cache-Control: must-revalidate = no-cache

Cache-Control: no-cache, no-store

Cache-Control: private, must-revalidate, max-age=0

Cache-Control: max-age=300

Cache-Control: private, must-revalidate

Cache-Control: Private

Cache-Control: max-age=1

Cache-Control: max-age=604800

Cache-Control: private, no-cache="set-cookie"

Cache-Control: "must-revalidate"

Cache-Control: max-age=0, no-store

Cache-Control: no-cache,no-store,must-revalidate

Cache-Control: private, no-cache

Cache-Control: no-cache, pre-check=0, post-check=0

Cache-Control: public, max-age=10800

Cache-Control: max-age=86400, public

Cache-Control: must-revalidate, max-age=1

Cache-Control: no-cache,must-revalidate

Cache-Control: no-store, no-cache

Cache-Control: private, max-age=10800, pre-check=10800

Cache-Control: No-cache

Cache-Control: cache

Cache-Control: max-age=1800

Cache-Control: max-age=345600

Cache-Control: no-cache, must-revalidate, max-age=0

Cache-Control: no-cache, must-revalidate, post-check=0, pre-check=0

Cache-Control: no-cache,no-store,max-age=0

Cache-Control: no-cache="set-cookie,set-cookie2"

Cache-Control: no-store, no-cache, must-revaldate, post-check=1, pre-check=2

Cache-Control: pre-check=0, post-check=0, max-age=0

Cache-Control: private, post-check=0, pre-check=0, max-age=0

Cache-Control: store, no-cache, must-revalidate, post-check=0, pre-check=0

Cache-Control: No-Cache

Cache-Control: max-age=0, no-cache, no-store

Cache-Control: max-age=1209600

Cache-Control: no-cache, no-store, must-revalidate, max-age=-1

Cache-Control: no-cache, private

Cache-Control: no-cache,max-age=0,must-revalidate

Cache-Control: post-check=0, pre-check=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0

Cache-Control: ,

Cache-Control: max-age=0, private, must-revalidate

Cache-Control: max-age=21600

Cache-Control: max-age=28800

Cache-Control: max-age=5184000

Cache-Control: max-age=82800

Cache-Control: no-cache, max-age=1

Cache-Control: public,max-age=3600

Cache-Control: Public

Cache-Control: max-age=0, private

Cache-Control: max-age=0, private, proxy-revalidate

Cache-Control: max-age=120

Cache-Control: max-age=18000

Cache-Control: max-age=25920000

Cache-Control: max-age=31104000

Cache-Control: max-age=311040000

Cache-Control: max-age=31536000

Cache-Control: max-age=3600, private

Cache-Control: max-age=900

Cache-Control: must-revalidate, no-cache, no-store, private, s-maxage=0, pre-check=0, post-check=0, max-age=0

Cache-Control: no-cache, no-store, must-revalidate

Cache-Control: no-cache, no-store, private

Cache-Control: no-cache,no-transform

Cache-Control: no-cache="set-cookie, set-cookie2"

Cache-Control: no-store, must-revalidate

Cache-Control: no-store, no-cache, must-revalidate, max_age=0

Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0, private

Cache-Control: private, no-cache, max-age=0

Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform

Cache-Control: private, no-store

Cache-Control: private, proxy-revalidate

Cache-Control: public, max-age=60

Cache-Control: public, max-age=604800, post-check=7200, pre-check=604800

Cache-Control: 7200

Cache-Control: "no-cache"

Cache-Control: False

Cache-Control: NO-CACHE

Cache-Control: No-Store

Cache-Control: No-store

Cache-Control: max-age=-111581876

Cache-Control: max-age=-170009618

Cache-Control: max-age=-4366177

Cache-Control: max-age=-492324790

Cache-Control: max-age=-52613456

Cache-Control: max-age=-625447

Cache-Control: max-age=-9274207

Cache-Control: max-age=0, no-cache, no-store, must-revalidate

Cache-Control: max-age=0, no-store, max-age=-2592000

Cache-Control: max-age=0, no-store, no-cache, must-revalidate

Cache-Control: max-age=0, s-maxage=0, private, must-revalidate

Cache-Control: max-age=1, must-revalidate, private

Cache-Control: max-age=1, no-cache, must-revalidate

Cache-Control: max-age=1, s-maxage=1, no-cache, must-revalidate

Cache-Control: max-age=10

Cache-Control: max-age=10800

Cache-Control: max-age=1200

Cache-Control: max-age=124416000

Cache-Control: max-age=14400

Cache-Control: max-age=172800

Cache-Control: max-age=180

Cache-Control: max-age=1800,public

Cache-Control: max-age=25920

Cache-Control: max-age=259200

Cache-Control: max-age=2678400, public

Cache-Control: max-age=300, must-revalidate

Cache-Control: max-age=300, private, proxy-revalidate

Cache-Control: max-age=315360000

Cache-Control: max-age=3600, s-maxage=3600, no-cache

Cache-Control: max-age=43200

Cache-Control: max-age=60, must-revalidate

Cache-Control: max-age=60, private, proxy-revalidate

Cache-Control: max-age=600, must-revalidate

Cache-Control: max-age=600, s-maxage=600

Cache-Control: max-age=604800, public, proxy-revalidate, must-revalidate

Cache-Control: max-age=64800

Cache-Control: max-age=7075

Cache-Control: max-age=7200

Cache-Control: max-age=86400, must-revalidate

Cache-Control: max-age=864000

Cache-Control: must-revalidate, max-age=0

Cache-Control: no - cache

Cache-Control: no-Cache

Cache-Control: no-cache, max-age=0

Cache-Control: no-cache, max-age=2592000

Cache-Control: no-cache, max-age=3600

Cache-Control: no-cache, max-age=86400

Cache-Control: no-cache, must-revalidate, max_age=0

Cache-Control: no-cache, must-revalidate, max_age=0, private

Cache-Control: no-cache, must-revalidate, no-cache="Set-Cookie", private

Cache-Control: no-cache, must-revalidate, no-store, post-check=0, pre-check=0

Cache-Control: no-cache, must-revalidate;

Cache-Control: no-cache, no-cache, no-cache, no-cache

Cache-Control: no-cache, no-store, max-age=0, must-revalidate

Cache-Control: no-cache, no-store, max-age=0, private, must-revalidate, proxy-revalidate

Cache-Control: no-cache, no-store, must-revalidate, max-age=0, proxy-revalidate, no-transform, max-age=0

Cache-Control: no-cache, no-store, must-revalidate, private

Cache-Control: no-cache, no-store, no-transform

Cache-Control: no-cache, no-store, private, max-age=0

Cache-Control: no-cache, no-store, private, max-age=1, must-revalidate

Cache-Control: no-cache, no-store, private, must-revalidate, post-check=0, pre-check=0

Cache-Control: no-cache, no-store, proxy-revalidate, must-revalidate

Cache-Control: no-cache, nostore

Cache-Control: no-cache, post-check=0,pre-check=0, max-age=0, max-age=1

Cache-Control: no-cache,must-revalidate, no-store

Cache-Control: no-cache,no-store,max-age=0,s-maxage=0,must-revalidate

Cache-Control: no-cache,private

Cache-Control: no-cache; max-age=0

Cache-Control: no-cache=set-cookie

Cache-Control: no-cash, must-revalidate

Cache-Control: no-store, no-cache, must-revalidate, max-age=0, max-age=0

Cache-Control: no-store, no-cache, private

Cache-Control: no-store,max-age=0,post-check=0,pre-check=0

Cache-Control: no-store,no-cache,must-revalidate, post-check=0, pre-check=0, max_age=0

Cache-Control: no-store,no-cache,must-revalidate,max-age=-1

Cache-Control: no-store,no-cache,must-revalidate,max-age=0,post-check=0,pre-check=0

Cache-Control: no-transform

Cache-Control: post-check=-1, pre-check=-1

Cache-Control: post-check=3600,pre-check=43200

Cache-Control: pre-check=0, post-check=0

Cache-Control: private , proxy-revalidate, must-revalidate

Cache-Control: private, must-revalidate, no-cache, no-check

Cache-Control: private, no-cache, must-revalidate

Cache-Control: private, no-cache, must-revalidate, no-store, max-age=0, post-check=0, pre-check=0

Cache-Control: private, no-cache, no-store, must-revalidate

Cache-Control: private, no-cache, no-store, must-revalidate, max-age=0

Cache-Control: private, no-store, must-revalidate

Cache-Control: private,max-age=3600

Cache-Control: private,no-cache,no-store,max-age=0,must-revalidate,proxy-revalidate

Cache-Control: private,no-cache,no-store,must-revalidate

Cache-Control: proxy-revalidate, max-age=0, must-revalidate

Cache-Control: public, max-age=141456

Cache-Control: public, max-age=294

Cache-Control: public, max-age=30

Cache-Control: public, max-age=300

Cache-Control: public, max-age=5

Cache-Control: public, must-revalidate

Cache-Control: public, must-revalidate, no-cache="Set-Cookie", max-age=300

Cache-Control: public, proxy-revalidate, must-revalidate, max-age=157680000

Cache-Control: s-maxage=1200, must-revalidate, max-age=0

http-stats:
HTTP/1.1 Cache-Control header field

Common Cache-Control header values:

Sample Cache-Control web server response:

Other common HTTP headers

Other less common headers

http-stats:HTTP/1.1 Cache-Control header field

Common Cache-Control header values:

Sample Cache-Control web server response:

Other common HTTP headers

Other less common headers

http-stats:
HTTP/1.1 Cache-Control header field