[HTTPCLIENT-1630] 304 response causes multiple copies of file in cache

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.4 Final
• Fix Version/s: 5.4-alpha1
• Component/s: HttpCache
• Labels: stuck volunteers-wanted
• Assignee: Unassigned
• Reporter: Philip Boutros
• Created: 09/Mar/15 18:18
• Updated: 30/Dec/23 10:46
• Resolved: 30/Dec/23 10:46

Description

See the attached log of a GET with a 200 response followed by a GET to the same URL which receives a 304 response and a CacheResponseStatus of VALIDATED. Using a HttpClient initialized as in the other attachment, these two requests result in 2 identical files in the cache directory, not one.

Additional info: This happens with multiple repeated requests that receive 304. Sometime however the file is served from the cache with no additional copy. See new http-sometimes.txt attachment for what that looks like.

More info: Code work fine against various URLs that include Cache-Control, etc. in their response, but has the same multiple copy behavior against any response that includes only ETag and Last-Modified.