1165986 - Doesn't utilize the cache when loading a css file generated from php

Status: RESOLVED INCOMPLETE

(Core :: Networking: Cache, defect)

Description

[Kevin Schier]

User Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:40.0) Gecko/20100101 Firefox/40.0
Build ID: 20150517004004

Steps to reproduce:

Visit this website: http://www.einstieg-informatik.de/community/ and reload a few times.


Actual results:

Firefox reloads the css file of this webpage every time and because it is generated by php, it takes ages to load.


Expected results:

Firefox should send a If-Modified-Since field in the request header and don't reload the css at all, because the server responds with 304.

Comment 1

[Honza Bambas (:mayhemer)]

If we don't send If- headers then it's just because the headers your PHP script sets are simply wrong.  Make sure there is an ETag and Date headers sent from the server.

Comment 2

[Kevin Schier]

Attachment: Response headers at 20:39:23 CEST

18:39:23 GMT is the same as 20:39:23 CEST

Comment 3

[Honza Bambas (:mayhemer)]

I'll take a look but don't expect a quick response here.  I more believe the problem is not in Firefox/Necko but rather on the site.

Maybe also check other browsers (IE/Chrome)

Comment 4

[Honza Bambas (:mayhemer)]

Kevin, is this still reproducible?  I have few bugs around validation and caching on the table right now, so I may look at this soon.  Thanks.

Comment 5

[Honza Bambas (:mayhemer)]

Irreproducible, apparently fixed on the server side.  I can also see a query in the css URL which makes us do a revalidation every time.  The attachment doesn't show the URL, so hard to say.