Somehow disappointed by the title. This is just a list of software they use. IMHO, that's not a "stack" article in my book. >>>> The load balancing and distrib

Somehow disappointed by the title. This is just a list of software they use. IMHO, that's not a "stack" article in my book. >>>> The load balancing and distribution layer is based on custom C code and a LuaJIT framework we created called Levee. Levee is capable of servicing 40K requests per second on a single machine Is "Leeve" open sourced ? It would be nice to see this source code and it would had been great to include some discussion on why they chose to implement this instead of using some other off-the-shelf LB solutions (like HAProxy or Openresty which are also mentioned in the article). This is the kind of things I like seeing in a "stack" article.