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HTTP and CORS Basics
Backend notes on HTTP from its core principles — messages, methods, status codes, caching, versions — and on CORS, the browser mechanism built on top of it.
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Non-Functional Testing
Functionally correct software can still fail in production. Performance, data volume, stability, reliability, scalability and security each answer a different question.
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Software Component Integration Testing
Functional Testing: Integration tests are not bigger unit tests. Black box, walking skeleton, Gherkin, Docker Compose — and which risks belong to which layer of testing.
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A Practical View of Unit Testing, TDD, and Specification
Three test layers and the pyramid, why 100% coverage still ships bugs, and how TDD, BDD and USDD differ in workflow but share one idea: define behaviour first.
