RFC 9875 - HTTP Cache Groups

• Status: Proposed Standard
• Published: October 2025
• Stream: IETF
• Errata: RFC Editor Errata

Abstract

This specification defines HTTP response header fields for grouping stored cache responses and invalidating cache groups.

Contents

• 1. Introduction
• 1.1. Notational Conventions
• 2. The Cache-Groups Response Header Field
• 2.1. Identifying Grouped Responses
• 2.2. Cache Behaviour
• 2.2.1. Invalidation
• 3. The Cache-Group-Invalidation Response Header Field
• 4. IANA Considerations
• 5. Security Considerations
• 6. References
• 6.1. Normative References
• 6.2. Informative References
• Acknowledgements
• Author's Address

Related Resources

• Official Text: RFC 9875
• Official Page: RFC 9875 DataTracker
• Errata: RFC Editor Errata