If you’re looking for interesting reading, this is not it. Today the question emerged: where are this test’s log messages going? Sticking a debug point somewhere and doing Logger.getLogger(“blah”), then digging into the resulting Logger object, revealed the answer. The Logger object had a parent member (a RootLogger), which had a member aai (AppenderAttachableImpl), which … Read moreDebugging Log4J: where are my log messages going?
If you’re looking for interesting reading, skip this post. If you’re trying to find out what database, username, and password Hibernate is using to execute the query, continue. This post is a reference for me, and it might be useful to someone else someday. Set a debug point anywhere you can get to the Hibernate … Read moreDebugging Hibernate: what database am I connecting to?
In the IT department where I work, our goals include clarifying and drawing out the processes used and decisions made by the business. Processes and decisions are our competitive advantage. The strategic direction is to center our products around Business Process Management. BPM models call out the major steps in the business process into charts … Read morePlatforms vs Process
This week I had a major success improving the performance of our application, thanks to some judicious use of JProfiler. The key was setting the filters correctly. This post will show you how to do that. First, you need JProfiler. This is a commercial product You can get a ten-day evaluation license for free, and … Read moreProfiling for Fun and Profit
There’s a big rant floating around the internet this week about Products vs Platforms. Platforms are service-based, with layer upon layer of exposed and secured and throttled services, while Products give the user everything they need in a perfect streamlined form. That is, Products give the user exactly what the builder of the Product believes … Read moreProduct vs Platform in Programming Languages
Dart is a nascent web development language. What’s the point? I observe two. Uniformity and familiarity: Like Node.js, Dart wants to run both in the browser and on the server. It tries to look familiar to both JavaScript and Java developers, so that either can adapt quickly. The goal is to move away from having … Read moreDart. What’s the point?
Guava’s CacheBuilder provides several options for keeping a cache down to a reasonable size. Entries can expire for multiple reasons, entries can be limited to a certain number, and entries can be made available for garbage collection. These options can be used individually or together. Each is simply one more method call during cache creation. … Read moreKeeping Your Cache Down to Size
Google has released a new version of Guava, and it’s bad news for one of my favorite classes, MapMaker. The exciting feature of MapMaker is its ability to produce an insta-cache, a key-value mapping that calculates values on the fly, expires them, and limits the quantity stored — all while maintaining thread safety. In release … Read moreGoodbye, MapMaker. Hello, CacheBuilder.
A common behaviour of a program, and therefore of my SQL script to replicate the program, is:1) Retrieve some value from reference data2) Use it repeatedly in SQL statements If this reference data differs by environment or by day, this adds a manual step to the SQL script. Here’s a neat trick to save the … Read moreStupid Oracle Tricks #1: SQL substitution variables
I’m currently distracted from life, immersed in Concepts of Modern Mathematics. Did you know that you can find out whether a number is prime by multiplying all the integers before it, adding one, and then dividing by the number of interest? Me neither! it’s like this: a number p is prime if and only if: … Read moreFinding Primes in Haskell