Opened 8 years ago

Closed 8 years ago

#4943 closed (fixed)

Cache middleware description

Reported by: anonymous Owned by: nobody
Component: Documentation Version: master
Severity: Keywords:
Cc: Triage Stage: Ready for checkin
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: UI/UX:


Original text:

If you use CacheMiddleware, it’s important to put it in the right place within the MIDDLEWARE_CLASSES setting, because the cache middleware needs to know which headers by which to vary the cache storage. Middleware always adds something to the Vary response header when it can.

Put the CacheMiddleware after any middlewares that might add something to the Vary header. The following middlewares do so:
SessionMiddleware adds Cookie
GZipMiddleware adds Accept-Encoding

First, the list lacks LocaleMiddleware as it adds vary Accept-Language.
Second, the responce is handled by middleware in reverse order, hence CacheMiddle must be placed BEFORE any middleware that change vary header.

Attachments (1)

4943.patch (1.1 KB) - added by SmileyChris 8 years ago.

Download all attachments as: .zip

Change History (3)

Changed 8 years ago by SmileyChris

comment:1 Changed 8 years ago by SmileyChris

  • Needs documentation unset
  • Needs tests unset
  • Patch needs improvement unset
  • Triage Stage changed from Unreviewed to Ready for checkin

comment:2 Changed 8 years ago by mtredinnick

  • Resolution set to fixed
  • Status changed from new to closed

Fixed in [6575], although I typed the wrong ticket number in the commit message.

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