demos
Two demos, two halves of the same engine — one keeps a query correct under a firehose of reads, the other syncs optimistic writes across everyone in the room. Both run on the real engine. Pick one.
reads · at scale
The real Wikimedia firehose streams into one query that stays correct edit-by-edit — no refetch, no diffing. Two recency boards mirror the same stream, grouped by page and by editor.
writes · collaboration
The other half of the engine: optimistic mutations that apply instantly and rebase on confirmation, multi-user sync, and a rejection path you can watch snap back. Open it in two windows and edit.