Modern Data Pipelines Testing Techniques
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Modern Data Pipelines Testing Techniques

A Visual Guide

About the Book

Any software product deteriorates rapidly without disciplined testing.
However, testing data pipelines is a hellish experience for new data developers.

Unfortunately, existing training about data pipeline testing give a scattered view of techniques for testing data pipelines. This book will help with a full view of modern data pipelines testing techniques in a highly-visual and coherent body of work. I hope it helps you in your career.

Why bother testing data pipelines? Billions of budget dollars regularly rely on the excellence of the data scientists, data engineers, and machine learning engineers behind the countless software data pipelines that inform critical business decisions.

Not sure?

Here are 3 blog posts to get started:

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  • Categories

    • Automated Software Testing
    • Databases
    • DevOps
    • Testing
    • Software Architecture
    • Enterprise Management
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About the Author

Moussa Taifi
Moussa Taifi

Data science platform architect focused on data science productivity, reliability, performance, and cost.

Working on designing and implementing large scale AI products through data collection, analysis, and warehousing.

Passionate about building scalable machine learning pipeline architectures with high business impact.

Aspiring author.

Site:

moussataifi.com

Medium:

https://medium.com/@farmi

Table of Contents

  • Chapter 1: Testing Your Patience
    • Data Pipeline Transitive Failure Modes: The Reality Check
    • Bad Data Devs Lifestyle
    • TDD + CICD to the rescue?
    • Objections to TDD for Data Work
    • Sources of Data Validation Complexity
    • The Data Product Promise No One Can Keep
    • Fighting Against The Manual Auto-Pilot
    • Observability vs. Testing vs. Monitoring
    • Test-Driven Theater vs Continuous Delivery Theater
  • Chapter 2: Core Types of Data Pipeline Tests
    • Discovering Holistic Testing
    • Types of Tests: Test Boundaries
    • Types of Tests: Test Sizes
    • Types of Tests: Data Product Testing Quadrant
    • Types of Tests: Write-Audit-Publish
    • Types of Tests: Testing Grid
    • Types of Tests: Code Scale vs Data Scale Testing Grid
    • Types of Tests: Structuring Data Quality Tests
    • Types of Tests: Pointwise vs Pairwise vs Composite
    • Types of Tests: Testing SQL Queries
    • Types of Tests: Assembling The Testing Parts + Bug Tests
    • Feedback Levels vs. Testing Scales
    • Test Pyramids and Test Summits
  • Chapter 3: Supporting Components for Data Pipelines Tests
    • Supporting Pattern: Static vs Dynamic Test Data Generation
    • Supporting Pattern: Data Copies, Clones, and Snapshots
    • Supporting Pattern: Reverse Data Plane to Support Testing
    • Supporting Pattern: Parallel Dev-Test Data Streams
  • Chapter 4: Testing Legacy Data Pipelines
    • Legacy Testing Pattern I: Before Touching Anything -- End to End Characterization Tests
    • Legacy Testing Pattern III: Semantic Monitoring
    • Legacy Testing Pattern IV: Data Processing Platform Alerts
    • Legacy Testing Pattern V: Co-Control Data Contracts
    • Legacy Testing Pattern VI: Legacy Pipelines Golden Rule
  • Chapter 5: Design for Testability
    • Designing Hidden Data Pipelines
    • Designing Temporally Decoupled Data Pipelines
    • Designing Debuggable Data Pipelines
    • Designing Encapsulated Data Pipelines
    • Designing Right-Tool-For-The-Job Data Pipelines
    • Designing Feature Engineering Data Pipelines
    • Designing Iceberg Data Pipelines
  • Chapter 6: Data-oriented Development Environments
    • What Can You Do From Your Laptop?
    • Optimal Data Development Environment
    • Fundamental Data Dev Repo Components
    • Coding Timeline vs Data Job Timeline
  • Chapter 7: Deploying Data Pipelines
    • Useful CICD workflows for Data pipelines
    • Data Pipeline Release lifecycle
    • Testable Scheduled Jobs CICD Workflow
    • Database Schema Versioning Rational
    • Database Schema Versioning Golden Rule
    • Database Schema Migrations - Fields Strategies
    • Database Schema Migrations - Hidden Things To Test
  • Chapter 8: Tips for Data Organizations
    • Data Organization Testability Score Cards vs Your Average Data Dev
    • When To Give Up On Testing Data Pipelines
    • Actors In A Data Product
    • Organizational Friction To Disable Data Pipelines Testability
    • Organizational Changes To Enable Data Pipelines Testability
  • Chapter 9: Is This It?
    • With Great Responsibility Comes Great Capped Autonomy
    • Data Dev Autonomy Destruction Cookbook
    • The Fear Of Obsolescence
  • Outro
    • References
    • Release Notes

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