Google Docs: System Design #

• Google Docs: System Design — structured design using the delivery framework: requirements, capacity, OT vs CRDT fundamental choice, YATA algorithm (Yjs Item.integrate), deletion semantics, state vector sync, Automerge bloom-filter protocol, ShareDB OT transform pipeline, persistence (IndexedDB + S3), and undo/redo in a CRDT. Grounded in Yjs, Automerge, and ShareDB source code.