Headers and Status Codes

Send metadata and HTTP status codes to the client.

Overview

Send metadata and HTTP status codes to the client.

Code Example

res.writeHead(201, { "Content-Type": "application/json" });\nres.end(JSON.stringify({ created: true }));

Web Development Context

In modern web development, understanding Headers and Status Codes is crucial. Node.js is widely used for building APIs, real-time applications, and microservices. Mastery of this concept allows you to build efficient, scalable, and secure backend systems.

Common Mistakes

• Blocking the event loop with heavy synchronous tasks.
• Exposing secrets in code instead of environment variables.
• Forgetting to handle promise rejections.

Next Steps

To solidify your understanding, review the related references and try out the practice challenges.