Metadata in zope / binary data on FS, was Re: [ZODB-Dev] __del__ with Persistent objects

[Toby Dickenson]

On Wednesday 23 July 2003 17:48, you wrote:
> Toby Dickenson wrote:
> > Zope responds to Squid with 304 Not Modified (unless the file really has
> > changed)
>
> This doesn't cause Zope to check any authentication?

er, yes. thats the point of it ;-)

ZPublisher responds "401 Unauthorised" if the authorization fails, and squid 
will return that to the client.

If ZPublisher authorizes the request, Zope's File instance will check the 
If-Modified-Since request header and return either:

  "200" plus the file body, if it has changed. Squid caches it 
  plus the Last-Modified header (ready for next time), and
  feeds it back to the client.

  or

  "304 Not Modified", but *not* the file body. Squid reads the file
  body from its cache and sends it direct to the client.



-- 
Toby Dickenson - http://www.geminidataloggers.com/people/tdickenson

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