How to perform a two level caching mechanism in rails?

Asked Nov 01 '20 at 17:10

Active Nov 01 '20 at 18:44

Viewed 286 times

I need to perform a two level caching mechanism on a food menu refresh application. I have to use Memcache and Redis for caching.

First need to check the menu is present in the memcache, if it is not or fail to fetch, need to move to redis caching and check the menu is present on not, if it not or fails due to some redis issue fetch the menu item from the DB.

pos_items = Rails.cache
              .fetch("pos_menu_items_for_location_#{@location_id}", expires_in: 90.days) do
              pos_items = RedisCache::PosMenu.fetch(location_id: @location_id) do
                            pos_items = PosMenuReader.new(location_id: @location_id).call
                            RedisCache::PosMenu.update(location_id: @location_id, menu: pos_items) unless pos_items == "working"
                            if pos_items == "working" 
                              wait_for_worker_to_finish = true
                            else %> 
                              <% Rails.logger.info("DEBUG::PosMenu::#{pos_menu_key} Fetched from db.") %>
                              <% pos_items %>
                          <% end
                          end
          end %>

edited Nov 01 '20 at 18:44

asked Nov 01 '20 at 17:10

Akhil G Krishnan

1

It would be helpful if you could show some code that you've attempted. – max pleaner Nov 01 '20 at 18:19
The code you have, doesn't it work? – Sergio Tulentsev Nov 01 '20 at 18:51
1

Also not sure I understand the need to use two in-memory stores for caching, but I suppose this is out of scope. – Sergio Tulentsev Nov 01 '20 at 18:55

How to perform a two level caching mechanism in rails?

0 Answers0