Add external link checking#2697
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🎊 PR Preview 326a3d4 has been successfully built and deployed to https://quarkus-website-pr-2697-preview.surge.sh
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This was referenced Jun 11, 2026
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# Conflicts: # src/test/java/io/quarkusio/LinkCrawlerTest.java
Two-phase link checker: Phase 1 crawls internal pages with Playwright, Phase 2 checks collected external URLs with plain HTTP. Per-domain rate limiting (Semaphore(2)), exponential backoff (5 retries), HEAD→GET→no-UA fallback for bot-blocking sites. Placeholder/template URL detection, do-not-check list for hostile sites, "such as" context filtering. GitHub Actions workflow runs on schedule and on PRs to checker code (dry-run mode for PRs). JBang script files issues with dead-link label and area/documentation for guide pages, with instructions on how to handle false positives. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…le URLs, show count in summary Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
… 403/405 lists Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Resolves #2110
Draft, because there are still too many dead links. Raising issues for all of them would create too much noise, and instead the job refuses and fails.
Did you know we have 4,700 pages in the site, which contain 17,973 external links checked?
External links can go AWOL for all sorts of external reasons, so we don't want to block PRs for them. However, we do want to discover them when they happen. The best way to do this is to run a scheduled job and raise defects. This is what we currently do on the extensions site. The length of the job is a bit of a challenge, and false positives caused by bot-blockers is a bigger challenge. Usually I work around that by just having a 'do not check' list, so I've used that pattern here. I've also excluded obvious placeholder links like myserver.com, and links which are in a sentence following "such as", such as "a url such as http://plausible.com".
The link checker will run in dry run mode for PR changes which directly affect the link checker (like this one), and otherwise it will run as a scheduled job and raise defects. I don't know if the default token will be good enough to raise guide defects in quarkus repo, but we will find out.