agree - i see a lot of start ups putting haproxy behind nginx for load balancing but i have never figured out why they wouldnt just stick with nginx. does anyone have an example of how the configuration looks on github?
there are features that haproxy support out of the box, e.g. sticky session load balancing, http 1.1 to upstream (newer version of nginx also support btw); on the other hand, people use nginx for SSL termination.