What is the difference between ETag and Last-Modified?
An example of an AI chatbot conversation about ETag and Last-Modified headers in HTTP.
What is the difference between ETag and Last-Modified?
ETag and Last-Modified are both HTTP headers used for caching and conditional requests. ETag is a unique identifier for a specific version of a resource, while Last-Modified indicates the last time the resource was changed.
How does the server generate an ETag?
The server generates an ETag by creating a hash of the resource's content or using a version number. This identifier changes whenever the resource is modified.
Can I use both ETag and Last-Modified together?
Yes, you can use both headers together. They serve similar purposes but can provide different benefits depending on the caching strategy.
Which one is more efficient for caching?
ETags can be more efficient because they allow for more granular control over resource versions, while Last-Modified relies on timestamps.
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