My first YSlow Grade A (100)!

17 December 2008   6 comments   Django

Mind that age!

This blog post is 12 years old! Most likely, its content is outdated. Especially if it's technical.

My first YSlow Grade A (100)! Just put in the remaining necessary cache headers on my kungfu club mobile site and I ran a YSlow! test on it and it got a 100! I've never had that before.

Admittedly, this is like cheating since the site is for mobile use it's kept very very simple and has no external dependencies so no need for a CDN. Getting a Grade A on YSlow! is very hard if the site needs to really blink. This one is built dedicated for small mobile phone screens on slow connections. I think now the bottleneck isn't in the rendering but in the connection latency for the remote database.

It also got a 4.9 (max 5.0) on which is the highest I've ever achieved there.

This site was developed in Django, fronted by Nginx with a remote MySQL connection to a server far away. Because of that connection I really had to get the caching right to avoid excessive SQL calls. The Debug Toolbar was instrumental to make that happen. I also used this snippet to allow me to use inline CSS and have it whitespace optimized.

Django's templates are really simplistic. I couldn't work out a way to specify cache unique keys depending on parameters so I had to do all the caching in the views.


Jason Lee

now is 98%,ha ha

Peter Bengtsson

Very funny :)
It's still 100% thank you very much


if you install memcached and turn on Django cache with memcached you'll get fastest site ever!

Peter Bengtsson

I will experiment with that once time allows. A problem is that only a small number of URLs can be memcached because cookies are set and read.


lol, a yslow grade for a site with just text links.

Peter Bengtsson

I know. It's a bit silly. Goes to show how hard it is to "impress" YSlow

Your email will never ever be published

Related posts

DianeDancesToHell.jpg 16 December 2008
Towel dog 17 December 2008
Related by Keyword:
Update to speed comparison for Redis vs PostgreSQL storing blobs of JSON 30 September 2019
How I simulate a CDN with Nginx 15 May 2019
KeyCDN vs AWS CloudFront 29 April 2019
I think I might put my whole site behind a CDN 23 April 2019
KeyCDN vs. DigitalOcean Nginx 12 April 2019