Existing documentation URL(s)
The two broken pages — note these are www.cloudflare.com/learning, not developers.cloudflare.com. See "Additional information" below.
Suggested redirect targets, all currently live on the developer docs:
What changes are you suggesting?
Both of these Learning Center URLs return 404 with no redirect:
https://www.cloudflare.com/learning/performance/brotli-vs-gzip/https://www.cloudflare.com/learning/performance/glossary/time-to-first-byte-ttfb/
Neither appears in https://www.cloudflare.com/sitemap.xml, which currently lists 33 URLs under /learning/performance/. So the content looks removed rather than moved.
Both URLs are still widely linked from outside Cloudflare, and both are the kind of page someone lands on mid-investigation — "should I use Brotli or gzip" and "what counts as a good TTFB" are among the most common questions people arrive with.
Suggested fix: 301s to the live equivalents, which are all on the developer docs now. That would repair the dead links without needing the Learning Center articles rewritten.
| Dead URL |
Suggested target |
/learning/performance/brotli-vs-gzip/ |
https://developers.cloudflare.com/speed/optimization/content/compression/ — covers the per-plan default algorithm; https://developers.cloudflare.com/rules/compression-rules/ covers choosing the Brotli/gzip/Zstandard order |
/learning/performance/glossary/time-to-first-byte-ttfb/ |
the "time to first byte (TTFB)" entry at https://developers.cloudflare.com/glossary/, or https://developers.cloudflare.com/speed/troubleshooting/slow-website/ for the TTFB target table |
If restoring or rewriting the Learning Center articles is preferred over redirecting, that works too — the main thing is that neither URL currently resolves to anything.
Additional information
On filing this here: I couldn't find any feedback route for www.cloudflare.com/learning. Those pages carry no "Was this helpful?" control, no edit link and no report link, and the footer offers only Contact sales / Support / Report abuse / Report a security issue. I understand this repo covers developers.cloudflare.com only — if there's a better home for Learning Center content bugs, please point me at it and I'll move this. If there isn't one, that might itself be worth fixing.
Minor, while I'm here: https://www.cloudflare.com/learning/cdn/what-is-caching/ says "335+ PoPs", while https://developers.cloudflare.com/reference-architecture/architectures/cdn/ says "hundreds of cities worldwide" alongside 405 Tbps and "95% of the world's Internet-connected population within 50 ms". Not a contradiction, but the Learning Center figure is both more precise and probably staler, and the two read oddly side by side.
Existing documentation URL(s)
The two broken pages — note these are
www.cloudflare.com/learning, notdevelopers.cloudflare.com. See "Additional information" below.Suggested redirect targets, all currently live on the developer docs:
What changes are you suggesting?
Both of these Learning Center URLs return 404 with no redirect:
https://www.cloudflare.com/learning/performance/brotli-vs-gzip/https://www.cloudflare.com/learning/performance/glossary/time-to-first-byte-ttfb/Neither appears in
https://www.cloudflare.com/sitemap.xml, which currently lists 33 URLs under/learning/performance/. So the content looks removed rather than moved.Both URLs are still widely linked from outside Cloudflare, and both are the kind of page someone lands on mid-investigation — "should I use Brotli or gzip" and "what counts as a good TTFB" are among the most common questions people arrive with.
Suggested fix: 301s to the live equivalents, which are all on the developer docs now. That would repair the dead links without needing the Learning Center articles rewritten.
/learning/performance/brotli-vs-gzip/https://developers.cloudflare.com/speed/optimization/content/compression/— covers the per-plan default algorithm;https://developers.cloudflare.com/rules/compression-rules/covers choosing the Brotli/gzip/Zstandard order/learning/performance/glossary/time-to-first-byte-ttfb/https://developers.cloudflare.com/glossary/, orhttps://developers.cloudflare.com/speed/troubleshooting/slow-website/for the TTFB target tableIf restoring or rewriting the Learning Center articles is preferred over redirecting, that works too — the main thing is that neither URL currently resolves to anything.
Additional information
On filing this here: I couldn't find any feedback route for
www.cloudflare.com/learning. Those pages carry no "Was this helpful?" control, no edit link and no report link, and the footer offers only Contact sales / Support / Report abuse / Report a security issue. I understand this repo coversdevelopers.cloudflare.comonly — if there's a better home for Learning Center content bugs, please point me at it and I'll move this. If there isn't one, that might itself be worth fixing.Minor, while I'm here:
https://www.cloudflare.com/learning/cdn/what-is-caching/says "335+ PoPs", whilehttps://developers.cloudflare.com/reference-architecture/architectures/cdn/says "hundreds of cities worldwide" alongside 405 Tbps and "95% of the world's Internet-connected population within 50 ms". Not a contradiction, but the Learning Center figure is both more precise and probably staler, and the two read oddly side by side.