What are the best practices for caching headers in web development?

What are the best practices for caching headers in web development?

The best practices for caching headers include using 'Cache-Control', 'Expires', and 'ETag' headers effectively.

Can you explain how 'Cache-Control' works?

'Cache-Control' specifies directives for caching mechanisms in both requests and responses, controlling how, and for how long, the content is cached.

What is the difference between 'public' and 'private' in Cache-Control?

'public' allows the response to be cached by any cache, while 'private' restricts caching to the user's browser only.

How do I set these headers in an Express.js application?

In Express.js, you can set caching headers using the 'res.set' method, like this: res.set('Cache-Control', 'public, max-age=3600');