alt Hacker NewsYou can locate an "intermediary backend" on the client, write outstanding mutations into local storage, have a background worker send it to the backend, with necessary retries, etc. At worst, the background worker would put out a message about a failed update which the UI tread would receive and show.
But the happy path stays lightning-fast.
Sure but there's a ton of complexity in any kind of local-first syncing solution. Often the solution is CRDTs.
My point above is that the simple solution ("traditional CRUD app") is actually viable even when the goal is very low latency.