Erros 404 do Googlebot devido a números de página

zogstrip · Maio 21, 2026, 2:48pm

Esperamos que isso resolva o problema sem introduzir novos

github.com/discourse/discourse

FIX: Redirect over-range topic page URLs instead of 404 (#40224)

main ← fix-over-range-page-redirect

opened 02:47PM - 21 May 26 UTC

ZogStriP

+32 -17

Requesting `/t/slug/id?page=N` with a page number beyond the topic's last valid …page raised `Discourse::NotFound` and returned 404. This produced a long-running stream of "increase in 404 errors" reports in Google Search Console, because crawlers (and our own `sitemap_recent.xml`) hold cached page URLs that become stale when a topic shrinks — most often after deleted posts or topic splits. The 404 also masked a latent bug for staff: the original check compared the requested page against `topic.posts_count`, a cached column that excludes whispers and ignores active filters (`username_filters`, `replies_to_post_number`, etc.). A staff user navigating to `?page=N` covering whisper posts could be 404'd even though the page contained content they were entitled to see. Replace the 404 with a 301 redirect to the last valid page (or the unparameterized topic URL if the topic fits in one page), using `@topic_view.filtered_posts.count` — the count of posts visible to the current viewer — so the math respects whispers, deletions visible to staff, and active filters. The COUNT query is gated behind `page > 1` so the common case (no `?page=` param) pays nothing extra. Negative pages still raise 404; only the over-range case becomes a redirect. https://meta.discourse.org/t/96337

Tópico		Respostas	Visualizações
Canonical tag on topic URL Bug	23	2504	7 de Fevereiro de 2017
?page= bug, both in core and in sitemap plugin Bug sitemap	4	625	1 de Junho de 2021
Sitemap plugin - no ?page=… urls in default sitemap Bug sitemap	12	1353	18 de Outubro de 2023
Pagination URL scheme not passed through when topic is renamed Feature	22	4051	20 de Maio de 2015
?page= sometimes redirects to a page with a different canonical URL Bug	3	735	19 de Outubro de 2020

Erros 404 do Googlebot devido a números de página

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