How do I configure caching for my API?
To configure caching for your API, you can use HTTP headers like Cache-Control and ETag. Would you like to know more about these headers?
Yes, what does the Cache-Control header do?
The Cache-Control header specifies directives for caching mechanisms in both requests and responses. It can control how long a resource is cached.
What about ETag? How does it work?
ETag is a unique identifier assigned to a specific version of a resource. It helps in validating cached responses and reducing bandwidth.
Can you give me an example of how to implement these in code?
Sure! In a Node.js Express app, you can set headers like this: res.set('Cache-Control', 'public, max-age=3600');
and res.set('ETag', 'your-etag-value');
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