[karlosos]

Using offline storage is the approach I use in most of my hobby projects. It's simpler, and faster (in developing and in usage) and there are no loading screens.

In my kindle-clippings-manager (https://github.com/karlosos/kindle_clippings_webapp) I import highlights from Kindle and store them in localStorage. The major drawback is a size limitation (10MB). This should not be a problem in most cases but if you need to store more data then indexedDB (with bigger limits but more complexity) can solve the issue.

Linear (https://linear.app/) uses its sync engine to store the data in Web Storage. With optimistic updates, it feels like an offline app. You can read more about the sync engine here: https://news.ycombinator.com/item?id=36519448