Hexagonal Architecture: Ports, Adapters, and Testable Cores
Learn hexagonal architecture through ports, adapters, and inward dependencies, with practical code, trade-offs, failure modes, and security guidance.
Posts tagged with #testing
Refactoring Toward Patterns Safely
Refactor toward design patterns safely: follow evidence of change, preserve behavior with tests, and make small transformations before adding an abstraction.
Testable Object Design and Collaborator Seams
Learn to design object-oriented code around behavior, collaborator boundaries, and stable dependency seams, with practical tests that resist refactoring churn.
Dependency Injection and State in Backend Services
Learn how dependency injection makes backend code easier to test, and how to separate shared services from request state without leaking data.
Deterministic Test Data and Isolated Environments
Make backend tests repeatable with controlled clocks, seeded fixtures, isolated databases, and failure-safe cleanup so teams can reproduce CI failures locally.
Data Validation: Ensuring Reliability in Data Pipelines
Learn data validation techniques for catching errors early, defining constraints, and building reliable production data pipelines.
Automated Testing in CI/CD: Strategies and Quality Gates
Integrate comprehensive automated testing into your CI/CD pipeline—unit tests, integration tests, end-to-end tests, and quality gates.
CI/CD Pipelines for Microservices
Learn how to design and implement CI/CD pipelines for microservices with automated testing, blue-green deployments, and canary releases.