MemCached Non-Traditional Usage?

Geoffrey Mina geoffreymina at
Wed Mar 21 15:21:19 UTC 2007

Thank for all your your responses!!  I never expected this kind of response
from a smaller group... truly awesome!

Perhaps I am missing something in the documentation... or maybe I am missing
the bigger picture.  If I have 3-5 memcached servers how do my clients know
which server to retrieve the object from?  As far as I can tell the data is
not distributed between the memcached instances... so you _must_ request the
object from the same memcached server it was originally stored in.  The
server which writes the data will not always be the server that needs to
read the data...

To the fellow who suggested MySQL cluster, I am trying to stay away from a
database solution for this problem.  Our architecture already has a lot of
database nodes.  We use a MySQL shard model where the load is balanced
logically by account/customer.  All master servers are running DRBD, with a
global catalog replicated locally, etc, etc, etc... needless to say it is
already a LOT of database servers to manage... The data I am hoping to store
in memcached is simply routing information so the processes know which MySQL
shard should be used for reading/writing data.

Thanks again!

On 3/21/07, Dave Strickler <dstrickler at> wrote:
>  Your usage will work just fine. Along with it's traditional use, we do
> the same thing in house. As long as you know the key for the data you're
> looking for I think you'll be very happy with the results.
> Dave Strickler
> MailWise LLC
> 617-933-5810 (direct)
> "Intelligent E-mail Protection"
> >>> "Geoffrey Mina" <geoffreymina at> 11:40 PM Tuesday, March 20,
> 2007 >>>
>  Hello,
> I am currently evaluating memcached for a non-traditional application.  It
> seems like the core functionality of memcached is to help reduce the number
> of database reads that are required for read-heavy web applications.  I am
> looking to implement memcached in totally different environment, and
> wondering if I am understanding the software correctly.
> I am hoping to implement this as a solution for a telephony platform.  I
> have a cluster of servers which need to share information with each other.
> I am looking to store information into memcached with server 1 and retrieve
> it with server 2... no database involved at any point.  The data that would
> be existing in cache would be true transient data that would exist for
> seconds or minutes and then would be flushed from the shared memory/cache.
> If I have 3 memcached servers and 10 telephony servers running the client
> API (connecting to all 3), would they freely share information with each
> other... or do I have this whole thing wrong?
> Thanks In Advance!
> Geoff
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