mdn/content

Cache management through ETAGs in bfcache documentation

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#41,211 opened on Sep 19, 2025

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Content:Performancedocument not writtenhelp wanted

Description

MDN URL

https://developer.mozilla.org/en-US/docs/Glossary/bfcache

What specific section or headline is this issue about?

No response

What information was incorrect, unhelpful, or incomplete?

The article is a very brief introduction explanation of bfcache, but it doesn't fully explain the consequences for people who were managing their content with only HTTP caching (for example: ETags).

It would be great to create a deeper explanation of bfcache mechanisms in browsers and to relate it on different techniques available for webdevs who want to stick to more traditional mechanisms with HTTP caching, on how to escape bfcache for certain pages.

What did you expect to see?

See above.

Do you have any supporting links, references, or citations?

No response

Do you have anything more you want to share?

No response

MDN metadata

Contributor guide

Tech stack
None
Domain
documentation
Issue type
documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
HTTP caching basicsbfcache concept
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Review the existing bfcache glossary page at files/en us/glossary/bfcache/index.md and any related MDN documentation on HTTP caching. The issue requests a deeper explanation of bfcache mechanisms and how they interact with ETags and HTTP caching. Check the comments for any additional guidance from maintainers. Expand the page to cover these topics without solving the issue.