Question about ETag header?

[Igor Sysoev]

On Sat, 16 Dec 2006, Aleksandar Lazic wrote:

> On Sam 16.12.2006 10:27, Igor Sysoev wrote:
>> On Fri, 15 Dec 2006, Aleksandar Lazic wrote:
>>> 
>>> I'am not sure if it's good or bad also how helpfull it really is,
>>> maybe someone on the list could help to understand this ;-)?!
>> 
>> I saw that browsers and cache proxies use Last-Modified as tag but not
>> as time value. If they want to revalidate response, they send
>> If-Modified-Since with the same value as they have received. MSIE adds
>> ", length=XXXX" string.  nginx gets time in seconds from IMS header and
>> does IMS == LM comparsion, but not "IMS <= LM" comparsion to return
>> 304.
>
> Sorry but, the ETag is a addon for the LM and IMS as I have right
> understand the rfc2616.

Yes, it's addition, but I do not see any ETag benefits over LM for static
files.


Igor Sysoev
http://sysoev.ru/en/