When I was told that you could only grow (not shrink) the storage volume for a running Windows VM in XenCenter, I took that as a challenge. Guess what, there is a way to shrink it! Here is how: Use XenCenter to add a new disk to the existing VM, making it the size you [...]

When you have a limited supply of some resource, and a demand for that resource that exceeds the supply, you have something economists call a shortage. In this article I explain how we deal with shortages of resources (called congestion) in software systems. In economics we learn about the concept of Supply and Demand. Simply [...]

In my recent post about Drizzle I suggested that because Drizzle has fewer lines of code (less than half compared to MySQL) that is has a lower intrinsic risk of software defects. Of course it has bugs of its own, but because Drizzle is focused squarely on OLTP use cases, it can be substantially smaller [...]