Thanks for the tip. I had seen that article before. It addresses a similar but different issue. As a reminder I'm trying to find a solution for flushing...
Valid XHTML 1.0 Strict - Valid CSS 2.1 TemplateThe Three Truths The soul of man is immortal, and its future is the future of a thing whose growth and splendour...
Greetings! I'm new to the list--just found the group while researching some issues about cookies and PNG files and thought this might be a good place to bring...
Here's another question that's vexing me at the moment. This comes under the category of "extreme optimization", I suppose, and when I posted this question to...
My reading of the specs was the same, but it does seem to be like that article mentions in practice. We have www.geograph.org.uk which ends up setting cookies,...
Hi Rob, Barry, Here's my test: http://www.phpied.com/www-vs-no-www-and-cookies/ In IE I don't see a way to set a cookie to example.org without it being also...
Hi Rob, Seems like it's pretty safe to remove all but the transparency chunks. I think removing the background chunk actually has a positive effect on some...
... *sigh* I had this sinking feeling that the answer was going to be "MSIE does something different"... Thanks for whipping up that test (and making me look...
Hello I wonder if someone can help me... I do not have any Header expiry dates set on any images/css/js folders as yet and when I run YSlow it shows: Empty...
Hi Scott this is the HTTP traffic. Empty cache has to download files so there is file size. Primed cache means the file exists in cache but an HTTP request...
Hello If I set far future expire header (10/10/2010) on a specific object . Does this mean that the browser will not talk to the server for 2 years from now...
... thats right - but only while it remains in the browsers cache - it's unlikely it will remain in the cache for 2 years but it means no GET requests for as...
Hello If I have two application servers under the same host name, is possible to apply the idea of parallel download? Should I have at least two host names? ...
Thanks for your reply Chris, so if I added Header Expires to my static content I could reduce my HTTP requests to 1 just for the HTML? How can I work out how...
thats right, you can get it down to one HTTP request, but only if all the other files are in the browser cache. If you empty the cache then you have a full...
Thanks again Chris. I think what I would like to know is what is the size of a HTTP Header Request. If I knew that they were 1K in size I know that I could...
... The win from adding the expires headers isn't so much from a bandwidth perspective as from reducing the time it takes a page to load by cutting out the...
... Interesting question (assuming I understand it correctly, which I may ... This seems ambiguous--is this per hostname or per IP? Everything I've read...
Hi folks, I have FF 2.0.0.14 on Win2K with Firebug 1.05 and YSlow 0.9.5b1 and TabMixPlus 0.3.6. Basically when I load a BASIC Auth protected page and after...
Russell, I have seen the same error message both with and without basic auth, but have no idea of its cause. I turn off firebug when not testing one of my ...
Hi, I'm thinking about HTTP requests on my sites. What does an average request costs in time? Can you say it in general? What is the reason to use css sprites...
An interesting topic; internally we've been trying to come up with some kind of Web page 'weight' metric we can use so our Web developers have an idea. Number...
Isn't that what ySlow does? It gives you a grade for each of the 13 rules and an overall grade for the page. It doesn't add the total # of KB for a page into...
... This isn't a number you can attach to all HTTP requests. It depends on a lot of factors including: - What is the request overhead in terms of bytes in the...
... The time between the start of a request and receiving the first byte of the file can easily be 50-75 ms (on the margin, assuming the DNS lookup is cached...
Thanks for the answers. I think I get it. There are some parts I can work on my sites (merge css files, use css sprites, less cookies etc.). I'll test it. bye ...