Eager load data before first request

rails_eager_load_i18n_translations_and_unicode_database.rb

# encoding: utf-8

# Source: https://gist.github.com/kml/79bd8cedf64caadd18ca

require "active_support/i18n_railtie"

# Eager load translations.
# https://github.com/svenfuchs/i18n/blob/master/lib/i18n/backend/simple.rb
# rails c
# I18n.backend.initialized?

module I18n
  class Railtie
    protected

    class << self
      alias original_initialize_i18n initialize_i18n

      def initialize_i18n(app)
        original_initialize_i18n(app).tap do
          unless I18n.backend.initialized?
            I18n.backend.send(:init_translations)
          end
        end
      end
    end
  end
end

require "active_support/multibyte/unicode"

# Eager load the Unicode database
# - opposite to default "Lazy load" strategy
# https://github.com/rails/rails/blob/master/activesupport/lib/active_support/multibyte/unicode.rb#L320
ActiveSupport::Multibyte::Unicode.send(:database).load