X-Pass-Why
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 statistics
X-Pass-Why response header information and usage statistics. | |
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Websites using header X-Pass-Why | 50,376 |
Percentage of websites that use X-Pass-Why header | <0.1% |
Total discovered header values | 13 |
Header uses directives | No |
Header values are unique or random | No |
Most popular in the country | United States |
X-Pass-WhyOften Used Together: