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Programming Concepts Intermediate

What is API Design?

The practice of designing application programming interfaces that are consistent, intuitive, and maintainable for developers to consume.

Good API design follows principles like consistency (uniform naming conventions, error formats), discoverability (logical resource naming, HATEOAS links), versioning (URL path, header, or query parameter strategies), proper HTTP method usage (GET for reads, POST for creates, PUT for updates, DELETE for removes), meaningful status codes, pagination for collections, filtering and sorting parameters, and comprehensive documentation. RESTful conventions, OpenAPI/Swagger specifications, and developer experience (DX) are central concerns. Well-designed APIs reduce integration time, minimize support burden, and enable ecosystem growth.

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An efficient search algorithm that finds a target value in a sorted array by repeatedly dividing the search interval in half.
Algorithm
A step-by-step procedure for solving a problem or performing a computation, defined as a finite sequence of instructions.
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A design pattern that restricts a class to a single instance and provides a global point of access to that instance.
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A data structure that follows First-In-First-Out (FIFO) ordering, where elements are added at the rear and removed from the front.
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A function that captures and retains access to variables from its enclosing scope, even after that scope has finished executing.
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A reusable solution template for commonly occurring problems in software design.
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