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13.5.4 Combining Byte Ranges Connected: An Internet Encyclopedia
13.5.4 Combining Byte Ranges

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13.5.4 Combining Byte Ranges

13.5.4 Combining Byte Ranges

A response may transfer only a subrange of the bytes of an entity- body, either because the request included one or more Range specifications, or because a connection was broken prematurely. After several such transfers, a cache may have received several ranges of the same entity-body.

If a cache has a stored non-empty set of subranges for an entity, and an incoming response transfers another subrange, the cache MAY combine the new subrange with the existing set if both the following conditions are met:

  • Both the incoming response and the cache entry must have a cache validator.

  • The two cache validators must match using the strong comparison function (see section 13.3.3).

If either requirement is not meant, the cache must use only the most recent partial response (based on the Date values transmitted with every response, and using the incoming response if these values are equal or missing), and must discard the other partial information.


Next: 13.6 Caching Negotiated Responses

Connected: An Internet Encyclopedia
13.5.4 Combining Byte Ranges

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