Surrogate-Control

HTTP response header

The Surrogate-Control response header allows origin servers to dictate how surrogates should handle response entities with control directives. Currently defined directives control processing and cache behavior

Header usage statistics

Surrogate-Control response header information and usage statistics.
Websites using header Surrogate-Control13,637
Percentage of websites that use Surrogate-Control header<0.1%
Total discovered header values232
Header uses directivesNo
Header values are unique or randomNo
Most popular in the country United States

Surrogate-Control Directives

Surrogate-Control directives value information and usage statistics
DirectiveShareWebsites countUnique Values

Surrogate-Control header usage distribution by website rank



Geographical Distribution

Header usage distribution by websites across the globe.



Websites utilizing Surrogate-Control

List of websites that use Surrogate-Control header
DomainCountryRankContacts
www.xing.com Germany271
www.meetup.com United States773
whois.gandi.net France836
ispsystem.com United States1,103
www.ispsystem.com Germany1,103
www.ssa.gov United States1,693
See full domain list

Common header values

List of top common Surrogate-Control header values
Header valueValue prevalence
no-store32.87%
no-store, content="BigPipe/1.0"26.71%
max-age=120012.19%
max-age=36009.02%
ESI/1.02.32%
max-age=864001.56%
max-age=86400, stale-while-revalidate=86400, stale-if-error=864001.51%
max-age=601.44%
max-age=3000.96%
public, max-age=864000.84%
content="ESI/1.0"0.81%
content=SSI/1.00.59%
content="ORAESI/9.0.4" max-age=150.43%
varnish=ESI/2.10.42%
max-age=25920000.30%
ESI/2.10.26%
no-cache0.25%
public, max-age=3000.25%
max-age=3600, public0.25%
content="ORAESI/9.0.4"0.25%