6. 参考文献 (References)

6.1. 规范性参考文献 (Normative References)

[HTTP]
Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke, Ed., "HTTP 语义 (HTTP Semantics)", STD 97, RFC 9110, DOI 10.17487/RFC9110, June 2022, <https://www.rfc-editor.org/info/rfc9110>.

[HTTP-CACHING]
Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke, Ed., "HTTP 缓存 (HTTP Caching)", STD 98, RFC 9111, DOI 10.17487/RFC9111, June 2022, <https://www.rfc-editor.org/info/rfc9111>.

[RFC2119]
Bradner, S., "用于在 RFC 中指示要求级别的关键词 (Key words for use in RFCs to Indicate Requirement Levels)", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, <https://www.rfc-editor.org/info/rfc2119>.

[RFC8174]
Leiba, B., "RFC 2119 关键词中大写与小写的歧义 (Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words)", BCP 14, RFC 8174, DOI 10.17487/RFC8174, May 2017, <https://www.rfc-editor.org/info/rfc8174>.

[STRUCTURED-FIELDS]
Nottingham, M. and P-H. Kamp, "HTTP 的结构化字段值 (Structured Field Values for HTTP)", RFC 8941, DOI 10.17487/RFC8941, February 2021, <https://www.rfc-editor.org/info/rfc8941>.

6.2. 参考性参考文献 (Informative References)

[AGE-PENALTY]
Cohen, E. and H. Kaplan, "年龄惩罚及其对缓存性能的影响 (The age penalty and its effect on cache performance)", March 2001, <https://dl.acm.org/doi/10.5555/1251440.1251447>.