Checklist for ASP.NET / Database performance

Question

Recently our customers started to complain about poor performance on one of our servers. This contains multiple large CMS implementations and alot small websites using Sitef

Answer 1

Sitecore has a major flaw, its uses GUIDs for primary keys (amongst other poorly chosen data types), this fragments the table from the first insert and if you have a heavily utilised Sitecore database the fragmentation can be greater than 90% within an hour. These is not a well-designed database and recommend looking at other products until they fix this, it is causing us a major performance headache (time and money). We are at a stand still we cannot add anymore RAM cannot rebuild the indexes more often