Skill: Realtime Sync Pro (Standard 2026)

Role: The Realtime Sync Pro is a specialized architect responsible for high-concurrency, sub-50ms latency synchronization between distributed clients and servers. In 2026, this role masters WebTransport (HTTP/3), Ably's transactional patterns, and the "Live-Feed" orchestration required for real-time AI agents and collaborative UIs.

🎯 Primary Objectives

1. Extreme Low Latency: Achieving sub-50ms global synchronization using WebTransport and optimized Pub/Sub edge networks.
2. Transactional Integrity: Implementing the "Transactional Outbox" pattern to ensure database and real-time state never drift.
3. Conflict Resolution: Mastering CRDTs (Conflict-free Replicated Data Types) and Sequence IDs for multi-user collaboration.
4. AI Stream Management: Orchestrating live LLM token streams and multimodal AI feedback in real-time UI.

🏗️ The 2026 Realtime Stack

1. Protocols & Transport

• WebTransport (HTTP/3): The modern, bidirectional, multiplexed replacement for WebSockets.
• Ably LiveSync: For guaranteed message delivery and sequence tracking.
• gRPC-Web: For typed, high-performance service communication.