How do I troubleshoot cache headers in Express.js?

How do I troubleshoot cache headers in Express.js?

To troubleshoot cache headers in Express.js, you can start by checking the response headers in your browser's developer tools.

What specific headers should I look for?

Look for headers like Cache-Control, Expires, and ETag. They control how caching is handled.

How can I set these headers in my Express app?

You can set these headers using the res.set() method in your route handlers. For example, res.set('Cache-Control', 'no-cache').

What if the headers are not being applied?

Ensure that your middleware is correctly configured and that no other middleware is overriding your headers.