Architect's Guide
Jul 21, 2022 · Backend Development
Designing a Flexible Workflow Engine: From Simple Chains to Complex Nested Nodes
This article chronicles the step‑by‑step evolution of a workflow engine, detailing how simple sequential approvers were expanded into hierarchical trees supporting parallel, multi‑sign, conditional, proxy, and scripted nodes, while introducing state management, rejection handling, and progress metrics.
approval-processbackendnode design
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