Commits on Dec 9, 2012

1. Switch to Puma for web server instead of Thin …

   Sinatra prior to 1.3 uses "EventMachine" mode of Thin, which disables
   Ruby
   threading. This can dramatically decrease throughput on JRuby and
   Rubinius, because it cannot take advantage of multiple CPU cores with
   this configuration.
   
   In addition, the MRI (Matz Ruby Implementation) C version of Ruby has a
   pattern where it will not block on IO if threading is used, because IO
   will run in the background concurrently while work is being done on
   other threads.
   
   Unfortunately, Thin with Sinatra < 1.3 forcibly turns threading off due
   to EventMachine, which makes it so the server has to stop and wait for
   external IO requests to finish until it can continue serving content
   (the
   exception being if you use the special EventMachine drivers, which are
   very difficult to implement).
   
   Puma does not have these restrictions. It is a fast, clean
   implementation based on threads, and should run well on all Ruby
   implementations. It should increase throughput dramatically vs Thin for
   sites doing a lot of remote IO. It also has a lot of power features like
   HTTP Keepalive. And best of all, it removes the EventMachine dependency!
   
   More information is available from their web site: http://puma.io

   

   kyledrake committed Dec 9, 2012
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