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docs(blog): add post on modeling data transformation pipelines#455

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domix merged 1 commit into
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feature/blog/20260606
Jun 6, 2026
Merged

docs(blog): add post on modeling data transformation pipelines#455
domix merged 1 commit into
mainfrom
feature/blog/20260606

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@domix

@domix domix commented Jun 6, 2026

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New article covering typed stage boundaries, single-item composition with
flatMap/mapError, batch pipelines that partition successes from failures,
wrapping exception-throwing stages with Try, and a complete event import
example with unit tests for each layer.

Pull Request

📌 Summary

Briefly describe the purpose of this pull request and what problem it solves.

Example: This PR adds a functional implementation of a lazy list, demonstrating deferred computation using Java 17 features.


✅ Checklist

Please check all that apply:

  • I have tested my changes locally
  • I have added unit tests where applicable
  • I have updated documentation where necessary
  • My code follows the project's coding conventions
  • I have linked any related issue(s) below

🔗 Related Issues

Closes #[issue-number]
Fixes #[issue-number]
(Related but not closing: #[issue-number])


💬 Additional Notes

Any other context, screenshots, design decisions, or points to be reviewed carefully.

Summary by CodeRabbit

  • Documentation
    • Published a new article on designing and implementing data transformation pipelines. Covers typed pipeline models, stage composition, batch processing, error handling patterns, and testing guidance.

  New article covering typed stage boundaries, single-item composition with
  flatMap/mapError, batch pipelines that partition successes from failures,
  wrapping exception-throwing stages with Try, and a complete event import
  example with unit tests for each layer.
@domix domix added the site Website and documentation site changes label Jun 6, 2026
@domix domix self-assigned this Jun 6, 2026
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coderabbitai Bot commented Jun 6, 2026

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Review Change Stack

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info
⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: e2a50eef-f88b-43f6-8ed6-8bbfe165723a

📥 Commits

Reviewing files that changed from the base of the PR and between 2eb15b3 and b92c16d.

📒 Files selected for processing (2)
  • site/src/content/plan.md
  • site/src/data/blog/modeling-data-transformation-pipelines.md

📝 Walkthrough

Walkthrough

Plan item 13 is marked as complete via strikethrough. A new blog article about modeling data transformation pipelines is published, covering typed pipeline abstractions, single-item and batch composition, exception handling, a practical end-to-end event import example, testing patterns, and common mistakes.

Changes

Transformation Pipeline Article

Layer / File(s) Summary
Plan completion and article publication
site/src/content/plan.md, site/src/data/blog/modeling-data-transformation-pipelines.md
Plan item 13 is struck through to mark it done. Article front matter (title, description, date, author, categories, tags) is introduced.
Core pipeline model and single-item composition
site/src/data/blog/modeling-data-transformation-pipelines.md
Article introduces the motivation for explicit pipeline structure, defines a pipeline stage as a typed function returning Result, explains single-item composition using flatMap to short-circuit on failure with mapError normalizing errors into a shared PipelineError sealed type, and provides stage design rules with intermediate type naming guidance.
Advanced patterns: batch processing, exceptions, and end-to-end example
site/src/data/blog/modeling-data-transformation-pipelines.md
Article covers batch processing that partitions successes and failures into BatchResult, wrapping exception-throwing boundaries with Try before converting to Result, and presents a complete event import pipeline with domain types, parse/enrich/store stage implementations, service-layer composition, and caller-side error branching.
Testing guidance, common mistakes, and summary
site/src/data/blog/modeling-data-transformation-pipelines.md
Article provides unit test examples for individual stages, full pipelines with short-circuit assertions, and batch runners, enumerates four common pipeline mistakes, recaps the four required pipeline characteristics, and includes a "Further reading" section with related links.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

  • domix/dmx-fun#438: Both PRs update site/src/content/plan.md by striking through a planned blog item and add a new functional/typed-pipeline blog post under site/src/data/blog, so the documentation changes overlap directly at the plan entry and blog-content level.

Poem

🐰 ✨ A pipeline takes shape so neat and true,
With types and stages, each knows what to do,
From parse to enrich, the data flows right,
No tangles or chaos—just functional light! 🌟

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name Status Explanation Resolution
Description check ❓ Inconclusive The description provides a detailed summary of the article content but the required template sections lack proper completion; Summary section duplicates the intro without elaboration, Related Issues section contains placeholders unfilled, and checklist shows unit tests were not added despite the template expectation. Expand the Summary section to explain the problem solved by the article, complete or remove the Related Issues placeholders, and clarify why unit tests weren't added as a PR change.
✅ Passed checks (4 passed)
Check name Status Explanation
Title check ✅ Passed The title 'docs(blog): add post on modeling data transformation pipelines' directly and specifically describes the main change: adding a new blog post about modeling data transformation pipelines.
Docstring Coverage ✅ Passed No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.

✨ Finishing Touches
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch feature/blog/20260606

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@domix domix merged commit b0f9525 into main Jun 6, 2026
5 checks passed
@domix domix deleted the feature/blog/20260606 branch June 6, 2026 17:34
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