I should have been more clear - when I say "working on", it means "debating internally what would be the best long-term strategy" (from a technical POV). But y

I should have been more clear - when I say "working on", it means "debating internally what would be the best long-term strategy" (from a technical POV). But yes, optimistic updates is one of the requirements. In the meantime, if you need something great, I can recommend Replicache and WatermelonDB - both are excellent.