What is the difference between Cache-Control and Expires headers?
An example of an AI chatbot conversation about Cache-Control vs Expires headers in HTTP.
What is the difference between Cache-Control and Expires headers?
The Cache-Control header specifies directives for caching mechanisms in both requests and responses, while the Expires header provides a specific date/time after which the response is considered stale.
Can you give me an example of how to use both headers?
Sure! You might use Cache-Control like this: Cache-Control: max-age=3600 to specify that the resource is fresh for one hour. The Expires header could look like this: Expires: Wed, 21 Oct 2023 07:28:00 GMT.
Which one should I use for better control?
It's generally recommended to use Cache-Control because it offers more granular control and is more widely supported in modern browsers.
Are there any compatibility issues I should be aware of?
Yes, some older HTTP/1.0 caches may not recognize Cache-Control, so it's a good practice to use both headers for maximum compatibility.
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