Design a high-level microservices architecture for a real-time collaborative document editor similar to Google Docs. Address the following specific requirements in your response: 1. Operational Transformation (OT) or CRDTs for conflict resolution. 2. Handling of concurrent WebSocket connections with sticky sessions. 3. Load balancing strategies to prevent hotspots. 4. Data consistency models across distributed nodes. Provide a text-based diagram of the component interactions and justify your technology stack choices regarding latency and throughput.