What is the purpose of the ETag header in HTTP?
An example of an AI chatbot conversation about the ETag header in HTTP.
What is the purpose of the ETag header in HTTP?
The ETag header is used for web cache validation. It helps browsers determine if the content has changed.
How does the ETag header improve performance?
By using ETags, browsers can avoid downloading unchanged resources, reducing bandwidth and speeding up load times.
Can you give an example of how to implement ETags?
Sure! On the server side, you generate an ETag value for a resource and send it in the response header. Clients can then use it in subsequent requests.
What happens if the ETag doesn't match?
If the ETag doesn't match, the server will send the full resource again, indicating that the cached version is outdated.
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