VaakLoom
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Interactive Sandbox

Live Workflow Simulator

Test sample VaakLoom declarative workflows in real time. Inspect DAG node traversal, parallel fan-out concurrency, and live telemetry trace emissions.

DAG Execution Map
Workflow Input Payload
Final Workflow Output
// Click "Execute Workflow" to run
Step Telemetry Trace Stream
Ready to execute. Select a scenario and press "Execute Workflow".

How This Works

In a live application, Engine.run(workflow, input, context) executes these steps asynchronously on the Node.js event loop or Python asyncio loop:

  • Sequential steps run one after another, passing mapped transformations downstream.
  • fanOut branches trigger concurrently using Promise.all without blocking worker threads.
  • Every step emits millisecond precision telemetry events with input/output snapshots and timing metrics.