title: Redis,distributed or not?
body: <p>Question 1:
  I know Redis load all the data into memory, thus improving the read/write speed. So, does it mean that if my memory size is 2G, the maximum dataset size should not be larger than 2G? Now my database has a 100G+ data, the memory of my server cannot be larger than 32G, so, Redis is no longer suitable for me?</p>
  
  <p>Question 2:
  Is Redis a distributed system or not? When I use google to search for redis's CAP property, it says Redis is not a distributed system, so, it has nothing to do with <a href="http://www.quora.com/Redis/What-is-Redis-in-the-context-of-the-CAP-Theorem" rel="noreferrer">CAP</a>
  . But from <a href="http://en.wikipedia.org/wiki/Redis" rel="noreferrer">Wikipedia</a>, it says it has a master-slave architecture, one master with many slaves.
  How confusing.</p>