If I recently changed my SSL certificate on Heroku, how long does it take for Cloudflare to recognize the change?

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Grade: Education Subject: Support
If I recently changed my SSL certificate on Heroku, how long does it take for Cloudflare to recognize the change?
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DNS propagation and certificate updates can take time. Cloudflare typically caches SSL certificate information. You can purge the cache in Cloudflare's SSL/TLS settings to force it to re-validate the certificate. It can take up to 24-48 hours for the changes to fully propagate, but purging the cache usually speeds up the process significantly.