Support » Plugin: W3 Total Cache » Individual post purge not working with AWS Elasticache

  • Resolved WStringer2


    Our site is comprised of multiple Linux servers (AWS EC2 instances load balanced via Elastic Beanstalk). I’ve configured W3TC to work with AWS Elasticache and we get very fast response times, but we’re unable to purge individual posts. If I click “Empty All Caches” everything is cleared OK, but if I click “Purge from Cache” from an individual post, it is not cleared. Eventually it will be refreshed after the cache expiration has passed, but there are times we need it flushed immediately.

    Any ideas on how we could troubleshoot this?


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  • Looks like I found the problem. We have a “staging” server that our content creators use that has a different URL from our public facing site. Even though they share the same WP database, the server URL difference is enough to cause a problem with Elasticache.

    If an editor purges a post from the staging server, it is not purged from the public facing site. If they login to the public facing site and purge a single post from there, it successfully purges. A total purge works successfully from either server.

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