Pete Freitag's Homepage

This question came up recently:

How do you read a stack trace?

Are there any resources that will educate me?...

It is rare that a simple JVM argument change can have a dramatic impact on execution times, but in the case of AWS Lambda adjusting the Tiered Complication settings can have a really big impact on performance in many (but not all) cases....

I've had a bunch of people ask me if ColdFusion / Lucee servers need to worry about the recent Java vulnerability in Spring, nick named Spring4Shell, or more formally known as CVE-2022-22965....

If you have a column that may contain NULL values, and you want sort on that column with an ORDER BY clause, which comes first the null values or the non null values?...

If you are using CloudFlare in front of your web server, it is a good idea to setup CloudFlare Authenticated Origin Pulls. When this is enabled and properly configured only CloudFlare will be able to connect to your origin web server directly....

Almost every day I see someone asking what to do about log4j 1.2 / 1.x versions. It can be quite a lot of wrap your head around, and it can't be answered easily in a sentence or two....

When I created a blog entry covering Log4Shell log4j on ColdFusion, and said I would update it as new information comes in, I didn't realize I would be updating it several times a day for the past week....

Here's how you can get the version of Log4j you are using at runtime using Java:

Java Code to Get the Log4j Version at Runtime

org.apache.logging.log4j.util.PropertiesUtil.class.getPackage()....

There is a critical security vulnerability (CVE-2021-44228 aka Log4Shell) in the java library log4j which is a popular logging library for java applications. It is included in both Adobe ColdFusion and Lucee for example....

Here's a quick code snippet that will output a list of OSGI java bundles and bundle versions that are loaded / installed on Lucee:

//CFMLEngine

engine = getPageContext().getCFMLFactory().getEngine();

//org.osgi....

While looking at the PageSpeed Insights for my blog I noticed that the Twitter widgets I was using to display a twitter follow button and a tweet / share button were causing some page speed issues....

A few years ago I gave a presentation to my local CFUG titled Docker for Devs. I recently realized that I never posted the slides or the examples. So while the version numbers may be a bit outdated, I thought it may be useful to post it....