Your site unavailable page

Ronald Bradford
June 19, 2008

When your site is down what do people see? If overloaded to you respond well or not?

For much larger organizations with the infrastructure and DNS management this should be part of your DR strategy. Yesterday was FireFox Download Day . Mozilla I don’t think coped as well as they could have and were not prepared. Looking at the two screens below you can see examples of error pages I got.

In this case it was a planned event, the increase in traffic was predicable ahead of time. Surely they could have had a static pages with something about the event, the high load and even then a static page of links if your goal was to download FireFox 3.

My site certainly doesn’t support the automated failover, I have to make a DNS change at my domain register Go Daddy to a different host that is already ready and wait for delegation, but I’m prepared for a significant outage like previously .

Tagged with: Web Sites

Producing IQR and Outlier statistics with SQL

Ronald Bradford
June 30, 2026

The interquartile range (IQR) measures the spread of the middle 50% of a distribution — the distance between the first quartile (Q1) and the third quartile (Q3). Combined with Tukey’s 1.

Producing Mode statistics with SQL

Ronald Bradford
June 26, 2026

The mode is the value or values that appear most frequently in a dataset. Unlike the mean or median, it applies naturally to categorical and ordinal data — star ratings, product codes, survey responses — and reveals what is most common, not what is average.

MySQL

Extending MySQL Capabilies with UDFs, Plugins and Components - Part 2

Ronald Bradford
June 24, 2026

MySQL offers three different approaches to extending the SQL capabilities with the default product you download and install. These are: User Defined Function (UDF) MySQL Manual MySQL Plugin MySQL Manual MySQL Component MySQL Manual In my prior post I provided a new uuidv function that accepted a numeric argument to return a string of the version of UUID specified.