Author here. The TL;DR is that architecting apps with a synced in-app database eliminates a whole category of work like managing network requests, handling loading states, implementing retry logic, and orchestrating state management because all you have to do is query the local database.
Real-time sync engines are the technology enabling this. I’m working on PowerSync[1] but there’s also cool work being done by Zero[2] and Electric-SQL[3]. Other interesting projects include like InstantDB[4] and Convex[5].
[1] https://powersync.com/
[2] https://zero.rocicorp.dev/
[3] https://electric-sql.com/
[4] https://www.instantdb.com/
[5] https://convex.dev/