What is an ETag and how do I implement it?
An example of an AI chatbot conversation about ETag implementation in web development.
What is an ETag and how do I implement it?
An ETag, or Entity Tag, is a unique identifier assigned to a specific version of a resource. It helps in caching and conditional requests.
How do I generate an ETag for my web resources?
You can generate an ETag by creating a hash of the resource's content or using a version number. This can be done in your server-side code.
Can you show me an example of ETag implementation in Node.js?
Sure! In Node.js, you can set the ETag in the response header like this: res.set('ETag', 'your-etag-value');.
What happens if the ETag doesn't match?
If the ETag doesn't match, the server will return a 412 Precondition Failed status, indicating that the resource has changed.
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