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Deployments clear Varnish once the new release is live
A Magento 2 deployment on Kubernetes now purges the Varnish cache once the new pods are online and before maintenance mode comes off, so pages from the previous release are not served after the switch. Purging everything in Varnish on a CoreStack or CoreCluster site now also clears files Magento does not tag, such as robots.txt and sitemaps.
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