Just want to add to what I said earlier, on the DB side which could be an external dependency, it doesn’t need to be. Django works super well with SQLite, again no external libs (it’s in the Python standard lib), and you should be able to handle a lot of traffic from a single sever with it.

I have in the past used Djangos built in “in memory” cache with a global invalidation on all db writes for simple apps like this that have a low write rate.