I can safely say it will work. Yes, you will loose a bit of performance possibilities with the over head of virtualization, but if your going virtual with everything else it just makes it easier to manage and bring on more Memcached machines as needed. The one thing to make sure of is to spreed your Memcached Machines around on your physical machines as much as possible to keep some reliability as well as balance performance.
On Wed, Feb 3, 2010 at 6:39 PM, MB <[email protected]> wrote: > Hello, > > I have a question about Memcached and virtualization. I am planning to > virtualize a cluster of physical servers using Citrix XenServer in > combination with an Application Delivery Controller (ADC) like > NetScaler to load balance the servers. My question is whether > installing Memcached as a virtual machine to cache dynamic content > would be beneficial, once the physical servers are virtualized. > > NetScaler is able to cache both static and dynamic content, but the > limitation is that it uses only its own RAM to cache, rather than use > all the Application Servers' spare RAM as a resource pool, like > Memcached does. > > When I talked with Citrix I was told that while I could install > Memcached as a virtual machine, doing so would be unnecessary because > all virtual machines inside a physical server or a cluster of physical > servers share the same CPU and RAM as a resource pool, making > Memcached redundant. > > I was wondering if anyone is aware of successful Memcached deployments > in virtualized environments. > > Thanks so much. > > M. > -- Nick Verbeck - NerdyNick ---------------------------------------------------- NerdyNick.com SkeletalDesign.com VivaLaOpenSource.com Coloco.ubuntu-rocks.org
