628607 - Introduce threshold for partial data to be re-used from cache

Status: RESOLVED WONTFIX

(Core :: Networking: HTTP, defect)

Description

[Bjarne (:bjarne)]

This is item (3) from bug #612135, comment #77

Summing up the point of this bug: Current code will use content from a partial cache-entry even if it contains just 1 byte, sending a range-request for the rest of the data. A ranged request is more complex to deal with (compared to a normal request) both for the server and the client, and it introduces extra overhead (probably more than 1 byte) just in the http-headers. Hence, we may want to add a preference which specifies a minimum amount of partial data to be stored before re-using it. The optimal value for this may vary for different devices depending on processing-power and network-speed, and the default value could be set accordingly.

Comment 1

[Bjarne (:bjarne)]

See also bug #613159, comment #26 for a scenario why this may be useful and potentially necessary.

Comment 2

[Patrick McManus [:mcmanus]]

undesired complexity.