Switched server to Puma.

Add puma config file and Procfile.

Gemfile

@@ -12,10 +12,11 @@ gem "omniauth-google-oauth2"
 gem 'figaro'
 gem 'ancestry'
 gem 'will_paginate'
+gem "puma"
 # gem 'kaminari'
 gem "active_model_serializers", github: "rails-api/active_model_serializers"
 gem "jwt"
-gem 'unicorn-rails'
+# gem 'unicorn-rails'
 gem 'rack-cors'
 
 

Gemfile.lock

@@ -65,7 +65,6 @@ GEM
     i18n (0.7.0)
     json (1.8.3)
     jwt (1.5.1)
-    kgio (2.10.0)
     loofah (2.0.3)
       nokogiri (>= 1.5.9)
     mail (2.6.3)
@@ -107,6 +106,7 @@ GEM
       pry (>= 0.9.10, < 0.11.0)
     pry-rails (0.3.4)
       pry (>= 0.9.10)
+    puma (2.16.0)
     rack (1.6.4)
     rack-cors (0.4.0)
     rack-test (0.6.3)
@@ -138,7 +138,6 @@ GEM
       activesupport (= 4.2.5)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    raindrops (0.15.0)
     rake (10.5.0)
     rspec-core (3.4.2)
       rspec-support (~> 3.4.0)
@@ -171,13 +170,6 @@ GEM
     thread_safe (0.3.5)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    unicorn (5.0.1)
-      kgio (~> 2.6)
-      rack
-      raindrops (~> 0.7)
-    unicorn-rails (2.2.0)
-      rack
-      unicorn
     will_paginate (3.1.0)
 
 PLATFORMS
@@ -195,13 +187,13 @@ DEPENDENCIES
   pg
   pry-nav
   pry-rails
+  puma
   rack-cors
   rails (= 4.2.5)
   rails-api
   rspec-rails
   spring
   sqlite3
-  unicorn-rails
   will_paginate
 
 BUNDLED WITH

Procfile

@@ -0,0 +1 @@
+web: bundle exec puma -C config/puma.rb

config/puma.rb

@@ -0,0 +1,13 @@
+workers Integer(ENV['WEB_CONCURRENCY'] || 2)
+threads_count = Integer(ENV['MAX_THREADS'] || 5)
+threads threads_count, threads_count
+
+preload_app!
+
+rackup      DefaultRackup
+port        ENV['PORT']     || 3000
+environment ENV['RACK_ENV'] || 'development'
+
+on_worker_boot do
+  ActiveRecord::Base.establish_connection
+end

spec/rails_helper.rb

@@ -0,0 +1,57 @@
+# This file is copied to spec/ when you run 'rails generate rspec:install'
+ENV['RAILS_ENV'] ||= 'test'
+require File.expand_path('../../config/environment', __FILE__)
+# Prevent database truncation if the environment is production
+abort("The Rails environment is running in production mode!") if Rails.env.production?
+require 'spec_helper'
+require 'rspec/rails'
+# Add additional requires below this line. Rails is not loaded until this point!
+
+# Requires supporting ruby files with custom matchers and macros, etc, in
+# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
+# run as spec files by default. This means that files in spec/support that end
+# in _spec.rb will both be required and run as specs, causing the specs to be
+# run twice. It is recommended that you do not name files matching this glob to
+# end with _spec.rb. You can configure this pattern with the --pattern
+# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
+#
+# The following line is provided for convenience purposes. It has the downside
+# of increasing the boot-up time by auto-requiring all files in the support
+# directory. Alternatively, in the individual `*_spec.rb` files, manually
+# require only the support files necessary.
+#
+Dir[Rails.root.join('spec/support/**/*.rb')].each { |f| require f }
+
+# Checks for pending migration and applies them before tests are run.
+# If you are not using ActiveRecord, you can remove this line.
+ActiveRecord::Migration.maintain_test_schema!
+
+RSpec.configure do |config|
+  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
+  config.fixture_path = "#{::Rails.root}/spec/fixtures"
+
+  # If you're not using ActiveRecord, or you'd prefer not to run each of your
+  # examples within a transaction, remove the following line or assign false
+  # instead of true.
+  config.use_transactional_fixtures = true
+
+  # RSpec Rails can automatically mix in different behaviours to your tests
+  # based on their file location, for example enabling you to call `get` and
+  # `post` in specs under `spec/controllers`.
+  #
+  # You can disable this behaviour by removing the line below, and instead
+  # explicitly tag your specs with their type, e.g.:
+  #
+  #     RSpec.describe UsersController, :type => :controller do
+  #       # ...
+  #     end
+  #
+  # The different available types are documented in the features, such as in
+  # https://relishapp.com/rspec/rspec-rails/docs
+  config.infer_spec_type_from_file_location!
+
+  # Filter lines from Rails gems in backtraces.
+  config.filter_rails_from_backtrace!
+  # arbitrary gems may also be filtered via:
+  # config.filter_gems_from_backtrace("gem name")
+end