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19.6.1.1 PATCH Connected: An Internet Encyclopedia
19.6.1.1 PATCH

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19.6.1.1 PATCH

19.6.1.1 PATCH

The PATCH method is similar to PUT except that the entity contains a list of differences between the original version of the resource identified by the Request-URI and the desired content of the resource after the PATCH action has been applied. The list of differences is in a format defined by the media type of the entity (e.g., "application/diff") and MUST include sufficient information to allow the server to recreate the changes necessary to convert the original version of the resource to the desired version.

If the request passes through a cache and the Request-URI identifies a currently cached entity, that entity MUST be removed from the cache. Responses to this method are not cachable.

The actual method for determining how the patched resource is placed, and what happens to its predecessor, is defined entirely by the origin server. If the original version of the resource being patched included a Content-Version header field, the request entity MUST include a Derived-From header field corresponding to the value of the original Content-Version header field. Applications are encouraged to use these fields for constructing versioning relationships and resolving version conflicts.

PATCH requests must obey the message transmission requirements set out in section 8.2.

Caches that implement PATCH should invalidate cached responses as defined in section 13.10 for PUT.


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Connected: An Internet Encyclopedia
19.6.1.1 PATCH

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