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The Tracemill engine model — concepts shared across CLI and Cloud.

Tracemill's engine model is the same whether you run it from the CLI or in Tracemill Cloud. This section covers those concepts once.

Start with the model

  • How it works — the Pool → Scenario → Runner → Sink data flow

Core concepts

  • Scenarios — step-by-step event sequences with stateful variables
  • Expressions — dynamic values via the ExprStr grammar
  • Event types — the shape of generated events
  • Pools — reusable source data
  • Sinks — where events are delivered
  • Jobs — orchestrate multiple scenarios with shared pools

Members & roles

Invite members and manage their roles within a workspace.

Event types

How event types shape the fields each generated event carries.

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Start with the modelCore concepts