Sometimes, my work is easy, the problem could be resolved with one look (when I’m lucky enough to look at where it needs to be looked, just like this one Varchar can be harmful to your performance – Quan Mai’s blog (vimvq1987.com) ). Sometimes, it...

Once upon a time, a colleague asked me to look into a customer database with weird spikes in database log usage. (You might start to wonder why I am always the one who looks into weird things, is there a pattern here) Upon reviewing the query stor...

As string is the most common data type in an application, nvarchar and its variant varchar are probably the most common column types in your database. (We almost always use nvarchar because nchar is meant for fixed length columns which we don’t...

A colleague asked me yesterday – how do we migrate properties of catalog content. There is, unfortunately, no official way to do it. There are several unofficial ways to do it, however. Today we will explore the way I personally recommend – for it...

If you are using Optimizely Customized Commerce, the common wisdom is that you should be using serializable cart mode. It’s not perfect (we discussed the drawbacks in, um, my book), but generally it has performance benefits. But for any reason tha...