Software Design and Development

REST Minimal API with Authentication

An HTTP API that can be called without proving who is calling is a public API, even if you “didn’t

Minimal APIs in ASP.NET Core map HTTP routes to handlers without a controller class. They are still ASP.NET Core (the

Put business rules next to the data they protect when the rule is set-based, must hold for every writer, and

Defensive programming is writing code that assumes inputs, clocks, disks, and other teams will lie. It is not “null-check everything”

An architectural style is a constraint on how parts communicate — a vocabulary. REST, client–server, pipes and filters, and event-driven

SOLID is five object-design heuristics from Robert C. Martin’s school of thought. They are about where change lands, not about

Reliability patterns keep a distributed call from turning a blip into an outage. They sit at process and network boundaries

Structural design patterns (GoF) compose classes and objects into larger structures without leaking every part’s internals. Use them when the

An architectural pattern is a reusable way to slice a system so that change, failure, and scale land in predictable