Age

Age

 

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The Age header tells the receiver how old a response is. It is the sender's best guess as to how long ago the response was generated by or revalidated with the origin server. The value of the header is the sender's guess, a delta in seconds. See Chapter 7 for more on the Age header.

Type

Response header

Notes

HTTP/1.1 caches must include an Age header in every response they send.

Basic Syntax

Age: delta-seconds

Example

Age: 60