HTTP JSON APIs – Sharp: NCLEX, Java & Python

Java: JSON Serialization

Why use boundary DTOs before domain objects?

Why treat JSON responses as strict contracts?

How does URL path versioning affect API design?

Why does setting timeouts in HttpClient help in practice?

Why use HTTP headers for API versioning?

What role does Jackson's ObjectMapper play in Java?

How would you explain a pitfall of not handling JSON schema changes in an interview?

How can you manage breaking changes in JSON APIs?

Why is backward compatibility important in APIs?

Why do teams use CompletableFuture in production code?