Architecture

Idum is composed of three core runtime concepts: workflow definitions, worker processes, and the queue substrate connecting them.

Core components

• Workflow definitions: Encode the business process as ordered steps. Keep each step focused, deterministic, and testable in isolation.
• Workers: Consume jobs and execute step logic. Scale workers horizontally without changing workflow behavior.
• Queue: Buffer demand spikes, isolate producers from latency, and enable retries without losing task intent.

Reliability model

• At-least-once delivery requires idempotent handlers.
• Retry with backoff for transient upstream failures.
• Dead-letter handling for non-recoverable jobs.