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Make iterative improvements to your workflow

Continuously improve your workflows using an iterative development approach.

Written by Jamie Gaynor

Workflows rarely emerge perfect on the first try. Whether you are automating a business process, building an api, or creating a customer-facing application, iteration helps you:

  • Start with a working foundation: Refine your process based on real-world usage.

  • Test assumptions quickly: Avoid over-engineering upfront.

  • Respond to change: Adapt as your understanding of the requirements deepens.

  • Optimize based on data: Catch edge cases and efficiency opportunities through actual execution data.

The iteration cycle

1. Start simple, ship fast

Begin with the core "happy path" of your workflow. Do not try to handle every edge case immediately. For example, if you are building a document processing workflow, start with:

  • A route step that accepts uploads.

  • A single transformation step.

  • An output step that returns results.

Get the basic flow working first, then skip complex error handling, retry logic, and optimization passes until later.

2. Observe real execution data

Once your workflow is running, use data to guide your next steps:

  • Monitor the runs tab to see actual execution behavior.

  • Check step outputs using the run inspector.

  • Look for patterns: Identify which steps take the longest or where errors occur.

  • Review logs in stderr to see exactly what is happening during key decision points.

3. Identify one improvement

Choose one specific area to improve based on your observations:

  • Performance: Optimize slow steps or add caching for repeated operations.

  • Reliability: Add error handling for observed failure modes.

  • Functionality: Add a requested feature.

  • Data flow: Refine how data passes between steps.

  • User experience: Improve response formatting or add helpful error messages.

4. Draft, test, promote

The Tines 3B branch system supports safe iteration:

  1. Create a draft branch: Start from your live workflow.

  2. Make your changes: Draft branches are isolated and have their own volume storage.

  3. Test thoroughly: Use manual runs, as draft branches do not auto-trigger on cron.

  4. Promote to live: Once you are confident, move the changes to your live workflow.

5. Document what changed

Update your readme files as you iterate. Note major changes to purpose, flow, or external integrations in your workflow readme, and update individual step readmes when a step’s behavior changes. Good documentation helps you and your teammates understand the "why" behind your choices.

Common iteration patterns

  • Add error handling gradually: Move from basic execution to using try/catch blocks and handling status codes.

  • Optimize with caching: Add a volume to cache results so you only fetch data when necessary.

  • Refine data flow: Filter and shape output so steps only pass necessary data, rather than entire outputs.

  • Split complex steps: Break large, multi-purpose steps into smaller, focused steps (e.g., parse input, validate, transform, store) to make them easier to test and debug.

When to stop iterating

You are ready to deploy when:

  • The workflow handles all observed real-world inputs.

  • Error rates are acceptable for your use case.

  • Performance meets your requirements.

  • The code is maintainable with clear documentation.

Remember that "done" does not mean perfect, it means good enough for now. You can always iterate again as requirements change.

Tips for success

  • One change at a time: Avoid the urge to refactor everything at once. Test each improvement before moving to the next.

  • Keep it working: Ensure each iteration leaves you with a functional workflow.

  • Utilize version control: Use draft branches for experimentation without affecting your live setup.

  • Read the execution data: Let real results, not hypothetical scenarios, guide your improvements.

  • Update documentation first: Planning your iteration in a readme clarifies your thinking before you write code.

Iterative improvement is how good workflows become great workflows. Start simple, observe, improve, and repeat.

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