What is the ETag header in HTTP?
An example of an AI chatbot conversation about the ETag header in HTTP.
What is the ETag header in HTTP?
The ETag (Entity Tag) header is used for web cache validation and conditional requests.
How does it help with caching?
ETags allow the server to determine if the content has changed, helping to reduce bandwidth by avoiding unnecessary downloads.
Can you give me an example of how it works?
Sure! When a client requests a resource, the server responds with an ETag. On subsequent requests, the client sends the ETag, and the server checks if it matches the current version.
What happens if the ETag doesn't match?
If the ETag doesn't match, the server sends the updated resource along with a new ETag.
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