IETF · API Deprecation and Sunset
HTTP references for announcing deprecation, retirement intent and migration documentation.
APIの非推奨化と廃止
この言語版の詳しい参照メモは英語で提供しています。
IETF · Deprecation and Sunset
RFC 9745, Standards Track (March 2025), defines Deprecation using a Structured Fields Date. RFC 8594, Informational (May 2019), defines Sunset as an HTTP-date retirement hint. Neither field guarantees availability.
Compare deprecation and retirement announcements →
IETF · RFC 9745 · Deprecation · Standards Track · March 2025 · §2–5 · consulted 2026-10-23
IETF · RFC 8594 · Sunset · Informational · May 2019 · §3–5, §8 · consulted 2026-10-23
