Hi Mohamed,
No, we no longer suffer from the performance issue and the issue has been resolved, however there are number of things involved...
Some of them are:
- We optimized it many times, we load tested application again & again & monitored it using profiler and optimized it for lot of things.
- Aggressively use caching where ever you can
- Remove plugins not used
- Disabled features not required
- You need a very powerful dedicated Server (we suggest to use Azure cloud hosting)
- Use CDN (We've build a plugin, will publish it soon)
- Use separate db server
- Host nopCommerce admin application on different server
But even after all those changes the site was not very much reliable & lightening fast. We finally fixed it by integrating Apache Solr with it.
And we have actually built a plugin from our learning; that you can start using in half an hour for integrating Solr with nopCommerce, so you do not need to re-invent the wheels again by doing all those stuff that we've done last year.
You can find more information on this forum topic as well as our website: nopAccelerate.
Note that we're about to publish the support document on our site & then will make our store live where you can buy it, or download a trial. I'll update here as well once its ready.
Regards