adk-architecture

Graph orchestration in event-driven architecture coordinates nodes through a Runner and NodeRunner, managing state propagation and preventing deadlocks across complex workflow paths.

A BaseNode contract defines the required API stability, observability standards, and event flow rules for custom nodes, ensuring correct checkpointing and resumption within the workflow runner.

Debug workflow state management resumption failures by verifying your custom node implementation against the BaseNode contract, checking checkpointing logic, and validating event propagation.

Human-in-the-Loop event propagation is needed in workflow orchestration when external validation or manual intervention must pause, checkpoint, and resume the graph state without losing context.

Yes, the architecture supports LLM context orchestration across multiple nodes by standardizing state management and event flows to maintain context integrity throughout the workflow execution.

Common design anti-patterns in event-driven workflow orchestration include mismanaging checkpointing logic, breaking BaseNode contracts, and causing deadlocks by improperly structuring Runner and NodeRunner interactions.