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    <p><strong>Note: While this does work, @btucker pointed out that it allows any Heroku-hosted app to access your ElastiCache cluster. I do not recommend using this solution.</strong></p> <p>Yes you can. The setup is similar to the guide Heroku has on <a href="https://devcenter.heroku.com/articles/amazon_rds" rel="nofollow">Amazon RDS</a>. The steps that differ go like this:</p> <ol> <li>Follow the "<a href="http://docs.amazonwebservices.com/AmazonElastiCache/latest/GettingStartedGuide/Welcome.html" rel="nofollow">Get Started with Amazon ElastiCache</a>" guide to create a cache cluster and node</li> <li>Install the <a href="http://aws.amazon.com/developertools/2310261897259567" rel="nofollow">ElastiCache Command Line Toolkit</a></li> <li><p>Allow Heroku's servers ingress to your ElastiCache cluster like the RDS guide explains but replace the <code>rds-</code> commands with <code>elasticache-</code> ones:</p> <pre><code>elasticache-authorize-cache-security-group-ingress \ --cache-security-group-name default \ --ec2-security-group-name default \ --ec2-security-group-owner-id 098166147350 \ # If your AWS_CREDENTIAL_FILE environment setting is configured, # this option is not necessary. --aws-credential-file ../credential-file-path.template </code></pre></li> <li><p>Set a Heroku config value for your production app with your cluster's hostname:</p> <pre><code>heroku config:set MEMCACHE_SERVERS=elasticachehostname.amazonaws.com </code></pre></li> </ol> <p>After that, follow the <a href="https://devcenter.heroku.com/articles/memcache#rails-setup" rel="nofollow">Memcache Rails setup</a>, and you're set.</p>
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    1. USRoss Allen
    1. USRoss Allen
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    1. COThanks - this works perfectly.
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      1. USalpheus
    2. COSorry if I just hijack this comment, but you probably want to use the private address to not get charged all the traffic? We have tried to do it with our EC2 instance but it didnt work, but heard it'd work with Elasticache
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      1. USnambrot
    3. COWhere do you find the private address, @nambrot? I use the "endpoint" listed in the AWS console and haven't seen charges for ElastiCache traffic yet.
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