We are preparing to deploy a nopCommerce site (http://www.trishoponline.com) and I've followed many of the optimization guides meticulously, deleting unused Languages and Countries and deactivating plugins to improve site performance. We've got a few images left to optimize, but otherwise I'm pretty comfortable with its performance, except in one area.
Using webpagetest.org, my "Time to First Byte" is atrocious, at 1+ seconds at its best and sometimes more than 2 seconds. I'm using a cloud server with 2 GB of memory (and plenty is still available) and a dedicated SQL Server, both on Everleap. I'm considering a CDN in the future but ultimately, performance once the site responds and starts downloading the page and images, things are satisfactory.
Test yourself if you like:
Anyone else experienced similar issues and corrected them? Any guidance on dealing with performance issues like this? This just seems like low hanging fruit if I can get the TTFB down under a half-second.