- Store all data as json
- App loads: load full json on a client
- Something changes by user - change json locally and every 10 seconds save whole json to backend as a single json file
- also every 10 seconds load the updated json from backend to client.
Yes, I know, parallel access problems, lack of schema, lack of db, using file to store. But how much it makes life easier and speed ups development at start! I am in this over 20 years, and I like dumb stupid solutions applied properly. Duct taping forever!
Files are pretty handy. It's a bit surprising how many people seem to have forgotten they are a thing... but not that surprising, given how hard big tech have tried to uninvent them.