diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000000000..d33c6a3c8660a
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,12 @@
+script: 'ci/travis.rb'
+notifications:
+  disabled: true
+rvm:
+  - 1.8.7
+  - 1.9.2
+env:
+  - "GEM=railties"
+  - "GEM=ap,am,amo,ares,as"
+  - "GEM=ar:mysql"
+  - "GEM=ar:mysql2"
+  - "GEM=ar:sqlite3"
\ No newline at end of file
diff --git a/Gemfile b/Gemfile
index 8ee210b4ca6af..c95c6fa5db30c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -21,13 +21,13 @@ gem "memcache-client", ">= 1.8.5"
 
 platforms :mri_18 do
   gem "system_timer"
-  gem "ruby-debug", ">= 0.10.3"
+  gem "ruby-debug", ">= 0.10.3" unless ENV['TRAVIS']
   gem 'ruby-prof'
 end
 
 platforms :mri_19 do
   # TODO: Remove the conditional when ruby-debug19 supports Ruby >= 1.9.3
-  gem "ruby-debug19", :require => 'ruby-debug' if RUBY_VERSION < "1.9.3"
+  gem "ruby-debug19", :require => 'ruby-debug' unless > "1.9.2" || ENV['TRAVIS']
 end
 
 platforms :ruby do
@@ -39,7 +39,7 @@ platforms :ruby do
   gem "sqlite3", "~> 1.3.3"
 
   group :db do
-    gem "pg", ">= 0.9.0"
+    gem "pg", ">= 0.9.0" unless ENV['TRAVIS'] # once pg is on travis this can be removed
     gem "mysql", ">= 2.8.1"
     gem "mysql2", "~> 0.2.11"
   end
diff --git a/ci/travis.rb b/ci/travis.rb
new file mode 100755
index 0000000000000..8087c72f90eec
--- /dev/null
+++ b/ci/travis.rb
@@ -0,0 +1,142 @@
+#!/usr/bin/env ruby
+require 'fileutils'
+include FileUtils
+
+commands = [
+  'mysql -e "create database activerecord_unittest;"',
+  'mysql -e "create database activerecord_unittest2;"',
+  'psql  -c "create database activerecord_unittest;" -U postgres',
+  'psql  -c "create database activerecord_unittest2;" -U postgres'
+]
+
+commands.each do |command|
+  system("#{command} > /dev/null 2>&1")
+end
+
+class Build
+  MAP = {
+    'railties' => 'railties',
+    'ap'   => 'actionpack',
+    'am'   => 'actionmailer',
+    'amo'  => 'activemodel',
+    'ares' => 'activeresource',
+    'as'   => 'activesupport',
+    'ar'   => 'activerecord'
+  }
+
+  attr_reader :component, :options
+
+  def initialize(component, options = {})
+    @component = component
+    @options = options
+  end
+
+  def run!(options = {})
+    self.options.update(options)
+    Dir.chdir(dir) do
+      announce(heading)
+      ENV['IM'] = identity_map?.inspect
+      rake(*tasks)
+    end
+  end
+
+  def announce(heading)
+    puts "\n\e[1;33m[Travis CI] #{heading}\e[m\n"
+  end
+
+  def heading
+    heading = [gem]
+    heading << "with #{adapter} IM #{identity_map? ? 'enabled' : 'disabled'}" if activerecord?
+    heading << "in isolation" if isolated?
+    heading.join(' ')
+  end
+
+  def tasks
+    if activerecord?
+      ['mysql:rebuild_databases', "#{adapter}:#{'isolated_' if isolated?}test"]
+    else
+      ["test#{':isolated' if isolated?}"]
+    end
+  end
+
+  def key
+    key = [gem]
+    key << adapter if activerecord?
+    key << 'IM' if identity_map?
+    key << 'isolated' if isolated?
+    key.join(':')
+  end
+
+  def activerecord?
+    gem == 'activerecord'
+  end
+
+  def identity_map?
+    options[:identity_map]
+  end
+
+  def isolated?
+    options[:isolated]
+  end
+
+  def gem
+    MAP[component.split(':').first]
+  end
+  alias :dir :gem
+
+  def adapter
+    component.split(':').last
+  end
+
+  def rake(*tasks)
+    tasks.each do |task|
+      cmd = "bundle exec rake #{task}"
+      puts "Running command: #{cmd}"
+      return false unless system(cmd)
+    end
+    true
+  end
+end
+
+results = {}
+
+ENV['GEM'].split(',').each do |gem|
+  [false, true].each do |isolated|
+    next if gem == 'railties' && isolated
+
+    build = Build.new(gem, :isolated => isolated)
+    results[build.key] = build.run!
+
+    if build.activerecord?
+      build.options[:identity_map] = true
+      results[build.key] = build.run!
+    end
+  end
+end
+
+# puts
+# puts "Build environment:"
+# puts "  #{`cat /etc/issue`}"
+# puts "  #{`uname -a`}"
+# puts "  #{`ruby -v`}"
+# puts "  #{`mysql --version`}"
+# # puts "  #{`pg_config --version`}"
+# puts "  SQLite3: #{`sqlite3 -version`}"
+# `gem env`.each_line {|line| print "   #{line}"}
+# puts "   Bundled gems:"
+# `bundle show`.each_line {|line| print "     #{line}"}
+# puts "   Local gems:"
+# `gem list`.each_line {|line| print "     #{line}"}
+
+failures = results.select { |key, value| value == false }
+
+if failures.empty?
+  puts
+  puts "Rails build finished sucessfully"
+  exit(true)
+else
+  puts
+  puts "Rails build FAILED"
+  puts "Failed components: #{failures.map { |component| component.first }.join(', ')}"
+  exit(false)
+end