Configurable concurrency for Ruby implementation

docs/ruby.rst

@@ -51,7 +51,8 @@ connection strings:
         public_folder:      'public',
         trafficlog_storage: {
           # mongo:          'mongodb://localhost:27017/test'
-        }
+        },
+        worker_procs:       1
     })
 
 .. NOTE: In the code sample shown above, `QM.launch_service` is used instead of

src/ruby-app/Gemfile

@@ -1,12 +1,8 @@
 #-  Ruby dependency management file
 
 #-  Gemfile ~~
-#
-#   Note that Thin is not strictly required here; WEBrick also works, and
-#   possibly other platforms and web servers, too.
-#
 #                                                       ~~ (c) SRW, 25 Apr 2013
-#                                                   ~~ last updated 16 Jan 2015
+#                                                   ~~ last updated 21 Jan 2015
 
 git_repo = {
     git: 'https://github.com/qmachine/qm-ruby.git'
@@ -18,9 +14,6 @@ local_fs = {
 
 gem 'json'
 gem 'qm', (FileTest.directory?(local_fs[:path]) ? local_fs : git_repo)
-gem 'thin', {
-    platforms: ['ruby']
-}
 
 ruby '2.2.0'
 

src/ruby-app/Procfile

@@ -1 +1 @@
-web: bundle exec rackup
+web: bundle exec ruby server.rb

src/ruby-app/config.ru → src/ruby-app/server.rb

@@ -1,14 +1,14 @@
-#-  Rack configuration file
+#-  Ruby source code
 
-#-  config.ru ~~
+#-  server.rb ~~
 #
 #   This Ruby app launches a QM API server and a web server for anything placed
 #   in the "public" folder.
 #
 #   See https://docs.qmachine.org/en/latest/ruby.html for more information.
 #
 #                                                       ~~ (c) SRW, 24 Apr 2013
-#                                                   ~~ last updated 20 Jan 2015
+#                                                   ~~ last updated 21 Jan 2015
 
 require 'rubygems'
 require 'bundler'