Tag Archives: HttpWatch

IE 9 – What’s Changed?

May 4, 2011

Now that IE 9 has been released and is widely used, we wanted to follow up on some of our previous IE related blog posts to see how things have changed. 1. Using a VPN Still Clobbers IE 9 Performance We previously reported about the scaling back of the maximum number of concurrent connections in IE 8 when your PC uses a VPN connection. This happened even if the browser traffic didn’t go over that connection. Unfortunately, IE 9 is affected by VPN connections in the same way: There is a subtle difference though. IE 8 would dynamically change it’s … Continue reading →

A Guide to Automating HttpWatch with PHP

March 11, 2011

Stoyan Stefanov, the creator of smush.it, architect of YSlow 2.0 and engineer at Facebook, has written an excellent three part guide to controlling HttpWatch from PHP: Automating HttpWatch with PHP Automating HttpWatch with PHP #2 Automating HttpWatch with PHP #3 He’s even published a class that wraps the HttpWatch API and makes it easier to use from PHP. In the rest of this blog post we wanted to follow up on a few points mentioned in Stoyan’s blog posts. These items don’t just apply to PHP. You may find them useful when automating HttpWatch using other languages such as C# or Ruby. … Continue reading →

Top 7 Myths about HTTPS

January 28, 2011

Myth #7 – HTTPS Never Caches People often claim that HTTPS content is never cached by the browser; perhaps because that seems like a sensible idea in terms of security. In reality, HTTPS caching is controllable with response headers just like HTTP. Eric Lawrence explains this succinctly in his IEInternals blog: It comes as a surprise to many that by-default, all versions of Internet Explorer will cache HTTPS content so long as the caching headers allow it. If a resource is sent with a Cache-Control: max-age=600 directive, for instance, IE will cache the resource for ten minutes. The use of … Continue reading →