HTTP Immutable Responses, September 2017
- Canonical URL:
- File formats:
- PROPOSED STANDARD
- P. McManus
- httpbis (art)
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The immutable HTTP response Cache-Control extension allows servers to identify resources that will not be updated during their freshness lifetime. This ensures that a client never needs to revalidate a cached fresh resource to be certain it has not been modified.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.