RESTful Web API Design with Node.js (Video 21)

The video tutorial covers API versioning, explaining its importance and benefits. It discusses how API versioning allows for new features without disrupting existing clients, providing flexibility and a grace period for developers. The tutorial demonstrates API versioning implementation in Express and Restify, highlighting the differences and methods used in each framework.

Why is API versioning considered important?

• It makes software development faster.

• It eliminates the need for software updates.

• It allows for the introduction of new features without breaking existing clients.

• It ensures that all clients use the latest version of the API.

What is one of the benefits of API versioning mentioned in the video?

• It reduces the cost of software development.

• It provides a grace period for developers using deprecated APIs.

• It simplifies the API design process.

• It guarantees immediate updates from all developers.

How is API versioning implemented in Express?

• By using a version control system.

• By creating a separate router for each API version.

• By using a single router for all versions.

• By defining all routes in the main application file.

What is a key difference between Express and Restify?

• Restify is built specifically for APIs, while Express is for web applications.

• Restify does not support API versioning.

• Express and Restify are identical in functionality.

• Express is built specifically for APIs, while Restify is for web applications.

How can a client specify the API version they are using in Restify?

• By modifying the URL.

• By using a version control system.

• By contacting the API provider.

• By specifying the version in the Accept-Version header.