re: membase message store use case

Hello all,

I'm evaluating membase for use as persistent storage for our messaging system and was wondering if people thought this is a good use case for membase?

The problems that I can potentially see for membase are:
It doesn't seem like there is a decent method of pagination in membase.
Also, there is a lot of queries where I want to retrieve the last x messages and it doesn't seem like membase is optimized for that.

Am I better off using mysql? Are they any recommendations for a highly scalable, low-latency message store?
Thanks,

Paul