Use dalli_store for all environments

Reduces possible inconsistency issues between 
dev, test, and prod.

.travis.yml

@@ -4,6 +4,7 @@ rvm:
 services:
   - postgresql
   - redis-server
+  - memcached
 env:
   - RAILS_ENV=test
 before_install:

Gemfile

@@ -24,6 +24,7 @@ gem 'airbrake', '~> 3.2.1'         # use with airbrake.io or errbit
 
 # Data
 gem 'pg'
+gem 'dalli'                     # memcached
 # gem 'schema_plus'             # add better index and foreign key support
 # gem 'jbuilder'
 
@@ -146,7 +147,6 @@ group :test do
 end
 
 group :production do
-  gem 'dalli'                   # memcached
   gem 'memcachier'              # heroku add-on for auto config of dalli
   gem 'unicorn'
   gem 'rails_12factor'          # https://devcenter.heroku.com/articles/rails4

config/application.rb

@@ -20,6 +20,13 @@ class Application < Rails::Application
     # Use sql instead of ruby to support case insensitive indices for postgres
     config.active_record.schema_format = :sql
 
+    # Cache
+    # config.cache_store = :memory_store
+    # config.cache_store = :mem_cache_store, ENV['MEMCACHE_SERVERS].split(','),
+    #   { namespace: Rails.application.config.settings.app_name, expires_in: 30.day, compress: true }
+    # Set cache_store the same for all environments to avoid inconsistency issues
+    config.cache_store = :dalli_store
+
     # Settings in config/environments/* take precedence over those specified here.
     # Application configuration should go into files in config/initializers
     # -- all .rb files in that directory are automatically loaded.

config/environments/production.rb

@@ -53,13 +53,6 @@
   config.logger = ActiveSupport::TaggedLogging.new(Logger.new(STDOUT))
   # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
 
-  # Use a different cache store in production.
-  # If using Memcachier on Heroku, the memcachier gem will auto config servers
-  # config.cache_store = :memory_store
-  # config.cache_store = :mem_cache_store, ENV['MEMCACHE_SERVERS].split(','),
-  #   { namespace: Rails.application.config.settings.app_name, expires_in: 30.day, compress: true }
-  config.cache_store = :dalli_store
-
   #
   # Enable serving of images, stylesheets, and JavaScripts from an asset server.
   # config.action_controller.asset_host = "http://assets.example.com"