Rails application wide settings storage using Redis

setting.rb

# Class to store and get application-wide settings by using Redis as storage
# REDIS might be defined in an initiliazier. As following.
#   REDIS = Redis.new
# @example
#   Setting.set(:setting_1, true)
#   Setting.get(:setting_1) # true
class Setting
  DEFAULTS = {
      setting_1: false
      setting_2: 5
      setting_3: "String"
  }

  def self.get(key)
    (value = REDIS.get(key)) ? parse(key.to_sym,value) : DEFAULTS[key.to_sym]
  end

  def self.set(key, value)
    REDIS.set(key.to_sym, value)
  end

  # Parse values by their default value's type. Redis only returns String
  def self.parse(key, value)
    klass = DEFAULTS[key].class

    if klass == FalseClass || klass == TrueClass #Handle Boolean
      return (value == "true")
    elsif klass == Fixnum
      value.to_i
    elsif klass == Float
      value.to_f
    else
      return value
    end
  end
end