Feature: Support caching of partial responses
Goal: Enable the caching of partial responses, and obsolete the range_offset_limit configuration option.
Status: Not started
ETA: unknown
Version:
Priority:
Developer:
More: Originally from Bug 1337
Details
(from the bug report): When range_offset_limit is set to -1, Squid tries to fetch the entire object in response to an HTTP range request. However, the entire file is fetched even when it is not cacheable (e.g. because it is larger than maximum_object_size). Squid should revert to fetching just the range if the entire file cannot be cached. Otherwise, a patch fetching mechanism such as Windows Update, which fetches a patch file in N chunks, will cause the file to be fetched in its entirety N times. This can cause huge inefficiencies. Squid should always check for cacheability before fetching the entire file.
The proper fix for this is to add caching of partial responses, eleminating the need for range_offset_limit.