What does the HTTP header Pragma: Public mean?

http pragma
user185631 picture user185631 · Dec 17, 2009 · Viewed 49.8k times · Source

What does the HTTP header Pragma: Public mean?

Answer

Gonzalo picture Gonzalo · Dec 17, 2009

According to the standard, Pragma is implementation dependent (section 14.32), except for no-cache because of its wide use. Cache-Control (section 14.9) is the proper way to control caching. This is what the standard says for a Cache-Control: public:

Indicates that the response MAY be cached by any cache, even if it would normally be non-cacheable or cacheable only within a non- shared cache.

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