title: Load Balancing (HAProxy or other) - Sticky Sessions
body: <p>I'm working on scaling out my app to multiple servers, and one requirement is that a client is always communicating with the same server (too much live data is used to allow bouncing between servers efficiently).</p>
  
  <p>My current setup is a small server cluster (using Linode).  I have a frontend node running HAProxy using "balance source" so that an IP is always pointed towards the same node.</p>
  
  <p>I'm noticing that "balance source" is not a very even distribution.  With my current test setup (2 backend servers), one server often has 3-4x as many connections when using a sample size of 80-100 source IPs.</p>
  
  <p>Is there any way to achieve a more balanced distribution?  Obviously sticky sessions prohibits a "perfect" balance, but a 40/60 split would be preferred to a 25/75 split.</p>