Top 30 REST API Interview Questions (Answers + Examples) — Echo With Coffee

Prepare for backend interviews with this concise, exam-style walkthrough of the Top 30 REST API interview questions. Each question includes a clear answer and short code/example snippets so you can learn practical concepts fast: REST constraints, HTTP semantics, versioning, caching, pagination, security, rate limiting, OpenAPI, testing, and more. Perfect for backend engineers, API designers, and anyone prepping for technical interviews.

What you'll get:

30 high-value REST API questions with concise answers
Practical examples and common pitfalls to avoid
Guidance on design, security, testing, and scaling APIs
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