Improve memory of app on Heroku w/ New Relic

* Help avoid R14 (Memory quota exceeded) errors.
  http://forum.upcase.com/t/how-to-free-up-swap-space-heroku/3017
* Refactor away some duplication.

lib/suspenders/app_builder.rb

@@ -280,10 +280,9 @@ def init_git
     end
 
     def create_heroku_apps
-      path_addition = override_path_for_tests
-      run "#{path_addition} heroku create #{app_name}-production --remote=production"
-      run "#{path_addition} heroku create #{app_name}-staging --remote=staging"
-      run "#{path_addition} heroku config:add RACK_ENV=staging RAILS_ENV=staging --remote=staging"
+      run_heroku "create #{app_name}-production", "production"
+      run_heroku "create #{app_name}-staging", "staging"
+      run_heroku "config:add RACK_ENV=staging RAILS_ENV=staging", "staging"
     end
 
     def set_heroku_remotes
@@ -310,9 +309,15 @@ def join_heroku_app(environment)
     end
 
     def set_heroku_rails_secrets
-      path_addition = override_path_for_tests
-      run "#{path_addition} heroku config:add SECRET_KEY_BASE=#{generate_secret} --remote=staging"
-      run "#{path_addition} heroku config:add SECRET_KEY_BASE=#{generate_secret} --remote=production"
+      %w(staging production).each do |environment|
+        run_heroku "config:add SECRET_KEY_BASE=#{generate_secret}", environment
+      end
+    end
+
+    def set_memory_management_variable
+      %w(staging production).each do |environment|
+        run_heroku "config:add NEW_RELIC_AGGRESSIVE_KEEPALIVE=1", environment
+      end
     end
 
     def create_github_repo(repo_name)
@@ -383,6 +388,11 @@ def override_path_for_tests
       end
     end
 
+    def run_heroku(command, environment)
+      path_addition = override_path_for_tests
+      run "#{path_addition} heroku #{command} --remote #{environment}"
+    end
+
     def factories_spec_rake_task
       IO.read find_in_source_paths('factories_spec_rake_task.rb')
     end

lib/suspenders/generators/app_generator.rb

@@ -156,6 +156,7 @@ def create_heroku_apps
         build :create_heroku_apps
         build :set_heroku_remotes
         build :set_heroku_rails_secrets
+        build :set_memory_management_variable
       end
     end
 

spec/support/fake_heroku.rb

@@ -25,14 +25,14 @@ def self.has_gem_included?(project_path, gem_name)
 
   def self.has_created_app_for?(remote_name)
     app_name = "#{SuspendersTestHelpers::APP_NAME}-#{remote_name}"
-    expected_line = "create #{app_name} --remote=#{remote_name}\n"
+    expected_line = "create #{app_name} --remote #{remote_name}\n"
 
     File.foreach(RECORDER).any? { |line| line == expected_line }
   end
 
   def self.has_configured_vars?(remote_name, var)
     File.foreach(RECORDER).any? do |line|
-      line =~ /^config:add #{var}=.+ --remote=#{remote_name}\n$/
+      line =~ /^config:add #{var}=.+ --remote #{remote_name}\n$/
     end
   end
 end