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conditionalGet.md

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Conditional GET

The conditionalGet middleware supports conditional GET requests, which validates the "freshness" of a response body. Currently supports:

  • If-Modified-Since. When a response status is 200, and Last-Modified less than or equal to this time, the response body and Content-* headers will be stripped, responding with 304 "Not Modified".

  • If-None_Match. Performs a similar validation, however compares the ETag for equality.