Many web/mobile applications generate huge amount of event logs (c,f. login, logout, purchase, follow, etc). Analyzing these event logs can be quite valuable for improving services. However, ...

今週はjava.util.loggingパッケージ、つまりLogging APIの変更点について紹介します。とはいっても、違いは1点だけです。 Logging APIでログを取るにはjava.util.logging.Loggerクラスを使用します。通常、ログは適切な名前空間により区別されます。名前空間によって区別 ...

When running spark-submit with slf4j-log4j12-1.7.18.jar in the ClassPath, FluentLogger works with no issues. When we use version 1.7.30 which comes with Spark3.0, Fluentlogger.getLogger throws a null ...

Java 7 introduced the Method Handles with the java.lang.invoke.MethodHandle and java.lang.invoke.MethodHandles classes. The Well-Grounded Java Developer (which I have previously reviewed) covers ...