What are the differences between HTTP caching headers?
An example of an AI chatbot conversation about HTTP caching headers and their differences.
What are the differences between HTTP caching headers?
HTTP caching headers control how responses are cached by browsers and proxies. Key headers include Cache-Control, Expires, ETag, and Last-Modified.
Can you explain what Cache-Control does?
Cache-Control specifies directives for caching mechanisms in both requests and responses. It can define how long a resource is considered fresh.
What about the Expires header?
The Expires header provides a date/time after which the response is considered stale. It's a way to set a specific expiration time.
How do ETag and Last-Modified differ?
ETag is a unique identifier for a specific version of a resource, while Last-Modified indicates the last time the resource was changed.
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