Cache-Control Directives (15 total)
- immutable
- max-age
- max-stale
- min-fresh
- must-revalidate
- no-cache
- no-store
- no-transform
- only-if-cached
- private
- proxy-revalidate
- public
- s-maxage
- stale-if-error
- stale-while-revalidate
Tells all caching mechanisms from server to client whether they may cache this object. It is measured in seconds
Websites using header Cache-Control | 4,684,428 |
Percentage of websites that use Cache-Control header | 43.10% |
Total discovered header values | 30,638 |
Header uses directives | Yes |
Header values are unique or random | No |
Most popular in the country | ![]() |
Directive | Share | Websites count | Unique Values |
---|---|---|---|
max-age | 41.57% | 1,947,549 | 12,973 |
must-revalidate | 37.10% | 1,737,870 | 1,501 |
no-cache | 37.07% | 1,736,568 | 106 |
private | 25.60% | 1,199,312 | 245 |
no-store | 24.73% | 1,158,608 | 68 |
public | 6.87% | 321,614 | 4,784 |
s-maxage | 1.99% | 93,448 | 653 |
no-transform | 0.85% | 39,836 | 94 |
proxy-revalidate | 0.42% | 19,704 | 409 |
stale-while-revalidate | 0.29% | 13,424 | 129 |
stale-if-error | 0.28% | 12,896 | 119 |
max-stale | <0.1% | 1,364 | 14 |
immutable | <0.1% | 791 | 29 |
min-fresh | <0.1% | 49 | 7 |
only-if-cached | <0.1% | 6 | 1 |
Top 10k sites | 8,084 websites |
Top 100k sites | 53,569 websites |
Top 1m sites | 507,998 websites |
Domain | Country | Rank | Contacts |
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Header value | Value prevalence |
---|---|
private | 13.53% |
no-store, no-cache, must-revalidate | 9.21% |
no-cache | 8.89% |
no-store, no-cache, must-revalidate, post-check=0, pre-check=0 | 8.37% |
max-age=3600 | 5.25% |
max-age=0 | 4.08% |
max-age=0, private, must-revalidate | 3.78% |
private,max-age=0,must-revalidate | 3.10% |
max-age=600 | 2.66% |
private, max-age=0 | 2.57% |
no-cache, must-revalidate, max-age=0 | 2.50% |
no-cache, no-store, must-revalidate | 2.23% |
max-age=600, must-revalidate | 2.14% |
no-cache, no-store | 1.30% |
max-age=3, must-revalidate | 1.02% |
max-age=0, no-cache, no-store, must-revalidate | 1.00% |
max-age=2592000 | 1.00% |
no-cache, no-store, max-age=0, must-revalidate | 0.90% |
no-cache, private | 0.90% |
no-cache, must-revalidate | 0.85% |