Impressive Concurrency Benchmark for Redis

Here is a graph of the concurrency from 1-10 requests

Concurrency of one is bad, but by 10 concurrent connections we have
already peaked at 107K GET/s

Here is the graph of concurrency from 1-27000 requests

This blew my mind, there is minimal performance degradation starting
at 4000 concurrent requests and at 26000 concurrent requests the
performance is 87.6K/s .. unbelievably good

Wow, these are some really strong results. @antirez kicks some major ass!