Actually, Yahoo's site is fast for a lot more reasons than just using a CDN. They have been EXTREMELY good at using css sprites, combining/minifying the code,...
347
Ernest Mueller
mxyzplkiv
Apr 1, 2008 2:02 pm
This is the core business model for Keynote and Gomez. Many CDNs will arrange for a temp account with one of these to validate the benefit they'll bring you...
348
Scott Frost
scottfrosty2000
Apr 1, 2008 4:00 pm
Patrick, You're correct - Saying a site is fast simply because they use a CDN is a bit too simple. I look at performance the same way I look at a car. I can...
349
weitzman
Apr 7, 2008 1:56 am
Any chance we can get a version of Yslow that works with beta5. The 0.9.4 version is incompatible and cannot be (easily) installed....
350
jimbomorrison99
Apr 7, 2008 6:08 pm
Hi all, A few months ago I was playing round with a JS/Ajax/php data-table (as a faster solution to XML Databinding)... (example ...
351
Rakesh Rajan
rakeshxp
Apr 8, 2008 11:11 am
We are trying to implement some of the performance rules in LifeBlob<http://www.lifeblob.com> . A sample header ( for a resource file ) looks like : DateTue,...
352
Rakesh Rajan
rakeshxp
Apr 8, 2008 11:14 am
I missed a point in the last mail. When I looked at the headers in case of Yahoo, they too include Last-Modified ( inspite of having all caching headers). So...
353
Barry Hunter
b_b_hunter
Apr 8, 2008 11:28 am
There was a thread about this a while ago, started by me following seeing a blog post suggesting that disabling Last-Modified would help, as browsers would be...
354
Zhang Yining
talk2yining
Apr 8, 2008 11:54 am
... Last-Modified and ETag headers are quite different from cache control headers. They are used to _Revalidate_ cached copies of objects in a conditional GET...
355
Reham El Gammal
reham_elgammal
Apr 8, 2008 4:00 pm
Hello I have a question of the response time and the size that Yslow calculate for each page tested First:- How this response time is calculated? Is it the...
356
Stoyan Stefanov
ssttoobg
Apr 8, 2008 6:07 pm
Hi Reham, In the Components tab you can see individual response times for each component. You're probably asking about the response time and size that show up...
357
Rakesh Rajan
rakeshxp
Apr 9, 2008 10:33 am
Thanks Barry for the information. The caching seems fine in FF2 ( but in FF3, the cached resource seems to expire in couple of mins). Regarding cookies in...
358
Rakesh Rajan
rakeshxp
Apr 9, 2008 10:38 am
Zhang , ... Does this mean that even if only the timestamp of the file is changed ( and the content is still the same ), the server would return a 304 ( even ...
359
Barry Hunter
b_b_hunter
Apr 9, 2008 10:47 am
... Do you mean that Etags will do that? Well it depends, properly configured etags, that just depend on the content, would do that. But from what I gather...
360
Zhang Yining
talk2yining
Apr 9, 2008 12:21 pm
... IIRC, if a request comes with both Last-Modified-Since and If-None-Match, then the server should check both. So for such requests, if the modified time has...
361
Reham El Gammal
reham_elgammal
Apr 9, 2008 12:39 pm
Hello What is the meaning of Yslow grades "A", "B" and "C" Thanks Reham Elgammal...
362
Brian Williams
c0ffee2k
Apr 9, 2008 1:40 pm
That would go back to an American grading system for schools From best to worst it goes from A to F skipping E for some reason.. not to sure on why the system...
363
Barry Hunter
b_b_hunter
Apr 9, 2008 2:04 pm
... <OT> In the UK, its A-D* then F(ail) then U(nclassified) (although sometimes A-E is used) </OT> ... -- Barry - www.nearby.org.uk - www.geograph.org.uk -...
364
Steve Souders
steve_souders
Apr 9, 2008 2:35 pm
ETag takes precedence over Last-Modified. In other words, if the If-None-Match test fails then the server doesn't even do the If-Modified-Since check. But in...
365
Zhang Yining
talk2yining
Apr 9, 2008 6:07 pm
... You are right, and looking into apache source code[0] also confirms this. Thanks for correcting my mistake. However, what we are discussing here is...
366
Steve Souders
steve_souders
Apr 9, 2008 8:12 pm
Understanding that ETags take precedence over Last-Modified dates can, and does have big performance implications in the real world, for both static and...
367
Juan Alonso
dharana.alonso
Apr 10, 2008 8:59 am
Hello, I have had some serious problems with YSlow since I started using it but I wonder if it's only happening to me as I see no mention about it on the list....
368
Scott Coldwell
cold1203
Apr 10, 2008 11:45 am
I've experienced yslow hanging on a different site that had a flash piece. With the piece removed, yslow behaved normally. I've also seen your second problem....
369
Jose Noheda
jose.noheda
Apr 10, 2008 12:22 pm
Hi all, I've compiled a new version of IWebMvc, Milestone 3. For those of you that don't know it already, IWebMvc is a flexible web / enterprise platform built...
370
Juan Alonso
dharana.alonso
Apr 10, 2008 5:25 pm
Thanks for the info Scott, at least now I can get the tabs working if I disable the flash. In case it helps the developers to fix the bug: the flash at ...
371
Stoyan Stefanov
ssttoobg
Apr 10, 2008 5:40 pm
Hi Juan, The first problem is fixed in the next YSlow minor release (0.9.5.beta - will be out really soon, probably next week) I'm not sure about the second,...
372
christian.storm
Apr 11, 2008 5:13 am
I've been trying to implement the new "Flush the buffer early [server]" best practice. However, with Apache and mod_gzip it seems that flushing the buffer...
373
Stoyan Stefanov
ssttoobg
Apr 11, 2008 10:15 pm
Hi guys, Initially 13, then 14, now http://developer.yahoo.com/performance/ has 34 performance best practices (rules). These will gradually find their way into...
374
Brad Bosley
brad.bosley@...
Apr 11, 2008 10:28 pm
Stoyan, As always, excellent stuff! Thanks so much to the whole team. A proposal for #35 is to ensure the keep-alives are enabled on the webserver. While ...
375
Juan Alonso Hernandez
dharana.alonso
Apr 12, 2008 3:09 am
Hi Stoyan, Excellent news! I'm glad to read that. Is it possible to test or have access to nightlies of YSlow? ... -- Juan Alonso...
