[erlang-questions] Re: [erlang-questions 29] Re: fun with the new erlang.org!
Thu Mar 31 00:07:55 CEST 2011
On Mar 30, 2011, at 13:50 , Steve Vinoski wrote:
> On Wed, Mar 30, 2011 at 7:41 AM, Raimo Niskanen
> <> wrote:
>> On Sat, Mar 26, 2011 at 05:03:56PM +0100, Koener Antoine wrote:
>>> Cacheability ?
>>> I can reload the page multiples times and still download images.
>>> It seems also that images don't have any 'cache' attributes.
>>> (I don't recommended using ETags unless you're absolutely sure that
>>> ETags will be always the
>>> same on multiple web servers. i.e. some webservers use inode
>>> information to compute the ETag
>>> which is different on different servers...thought I don't know how
>>> erlang-web compute it)
>> Please inform a newbie, I just checked HTML4.01 and did not
>> find any "cache" attribute.
> He's referring to cache control headers such as Expires, ETag, and
> Cache-Control. These aren't part of HTML but rather are typically
> configured for the web server itself. See section 13 of the HTTP 1.1
Here's a simple method to determine how 'caching' is handled by the
It seems that inets isn't really ideal for serving real web content,
because [extracted from the web page]:
Last-Modified 70 weeks 5 days ago (Fri, 20 Nov 2009 11:37:29 GMT)
validation returned same object
If-Modified-Since are HTTP headers means:
me (web browser talking) please web server give me only content that
has changed since this "date", because I don't need to
retrieve the same content since I already have it...
Unfortunately inets sends the same content every time a HTTP GET is
done, regardless of HTTP headers.
I hope that this explanation will clarify a bit more.
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