_________ headers are key to validating the cache mechanism in API testing by indicating when the data should be re-fetched.

  • Age
  • Cache-Control
  • Cache-Status
  • If-Modified-Since
"If-Modified-Since" headers are crucial in validating the cache mechanism in API testing. They indicate the last modification time of the resource, allowing the server to respond with the full content only if it has been modified since a specified date.
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