Getting google to recognize redirects quickly

[Andiamo]

Hi everyone, happy holidays.

I have a client that has duplicated their website across multiple subdomains. I'm working with them to implement sitewide redirects.

What's the fastest way to get Google to "see" that these subdomains have been redirected and to get them deindexed? Does it make sense to hook up each subdomain with Google Search Console and then request removal via Search Console?

Thx!

[n0tSEO]

From my experience, that will take up at least two weeks until the old subdomains get deindexed and fully replaced.

Have you implemented 301 (not 302) redirects with canonical?

[Andiamo]

Yes, exactly.

Two weeks was traditionally what we experienced, but we've seen things move much more slowly over the past year or so.

[levo]

Search Console removal only hides the pages. You can create a temporary sitemap with old urls to expedite the process.

This a quote from John Mueller "One way to speed this up could be to submit a temporary sitemap file listing these URLs with the last modification date (eg, when you changed them to 404 or added a noindex), so that we know to recrawl & reprocess them." "This is something you'd just want to do for a limited time (maybe a few months), and then remove, so that you don't end up in the long run with a sitemap file that's not needed by your site."

[RedBar]

Getting google to recognize redirects quickly

In general, even these days, I find that G does this reasonably quickly, usually 2-4 weeks HOWEVER G never, ever does it completely except after several years, minimum 3-5 years.

I still have a couple of sites completely removed and re-directed correctly, one I let the registration drop altogether for about 18 months or so, and I can still find the occasional page, and especially so images, in their SERPs.

Just like they cannot track correctly original page and image creators, their systems seem to be unable to delete non-existent pages and domains.

95+% will be done quickly and efficiently, the balance is so variable it's not worth bothering about, frustrating I know but unfortunately that's the reality.

FWIW I never seem to have this problem with Bing, DDG, Ecosia etc. however it always takes them longer to do it but when they do the old stuff is gone, in my experience.

[tangor]

g seems to hoard things ... urls particularly, for insane lengths of time. Still have hits for pages that were removed 15 or more years ago!