HTTP response header
The number tells the user how many times this version of a page has been served from the cache. A MISS indicates the page was not served from cache. The x-pass-why header will tell the user the reason why the request did not hit the cache.
Header usage statisticsX-Pass-Why response header information and usage statistics.
|Websites using header X-Pass-Why||34,164|
|Percentage of websites that use X-Pass-Why header||<0.1%|
|Total discovered header values||12|
|Header uses directives||No|
|Header values are unique or random||No|
|Most popular in the country|| US|
X-Pass-WhyOften Used Together: