Mongodb 与redis 同时在一个机器上 （MongoDB with redis）

Please note you should never run a Redis and MongoDB server on the same machine. MongoDB memory is designed to be swapped out, Redis is not. If MongoDB triggers some swapping activity, the performance of Redis will be catastrophic. They should be isolated on different nodes.

不要将mongodb于redis同时放在一个机器上。

Redis and MongoDB can be used together with good results. A company well-known for running MongoDB and Redis (along with MySQL and Sphinx) is Craiglist. 

但将两者结合起来使用是有效的。

详见http://stackoverflow.com/questions/10747580/mongodb-service-at-100-cpu