<div>I have been wondering about the best way to upgrade versions of our memcached server without losing all the cache at once. We have a single server at the moment. If we wanted to take the server down to upgrade we would lose the entire cash.
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<div>Would the following scenario help?</div>
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<div>Server is running several memcached daemons on different ports/ethernet adapters</div>
<div>We compile the new version of memcached on the server</div>
<div>for each daemon d{</div>
<div> kill d</div>
<div> start a new daemon using the new version on the same port as d</div>
<div> wait a bit for the cache to fill<br>}</div>
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<div>If so, does anyone know how to </div>
<div>1. configure multiple instances using memcached.conf</div>
<div>2. make one version and start it while another older version is still running?</div>
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<div>thanks for your help!</div>
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