@foursquare_tips        = Rails.cache.fetch('foursquare_tips', expires_in: 12.hours, race_condition_ttl: 10) do
      foursquare_connection = Foursquare2::Client.new(client_id: FOURSQUARE_CLIENT_ID,
                                                      client_secret: FOURSQUARE_CLIENT_SECRET,
                                                      oauth_token: FOURSQUARE_OAUTH_TOKEN,
                                                      api_version: '20140201') unless foursquare_connection