Add gem bootsnap and set it up

Gemfile

@@ -25,6 +25,7 @@ gem 'rack-ssl', require: 'rack/ssl' # force SSL
 gem 'rack-ssl-enforcer', require: false
 gem 'rails_autolink'
 gem 'useragent'
+gem 'bootsnap', require: false # faster application boot
 
 # Please don't update hoptoad_notifier to airbrake.
 # It's for internal use only, and we monkeypatch certain methods

Gemfile.lock

@@ -53,6 +53,10 @@ GEM
       rack (>= 0.9.0)
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
+    bootsnap (1.3.1)
+      msgpack (~> 1.0)
+    bootsnap (1.3.1-java)
+      msgpack (~> 1.0)
     bson (4.3.0)
     bson (4.3.0-java)
     builder (3.2.3)
@@ -208,6 +212,8 @@ GEM
       mongoid (>= 4.0.0)
       rails (>= 4.2.0)
       railties (>= 4.2.0)
+    msgpack (1.2.4)
+    msgpack (1.2.4-java)
     multi_json (1.13.1)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
@@ -450,6 +456,7 @@ DEPENDENCIES
   airbrake (~> 4.3.5)
   better_errors
   binding_of_caller
+  bootsnap
   campy
   capistrano
   capistrano-bundler

config/boot.rb

@@ -12,6 +12,7 @@
 ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
 
 require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])
+require 'bootsnap/setup'
 require 'json'
 
 begin