Java
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Session Timeout Handling on JSF AJAX request
Session Timeout Handling on JSF AJAX request When we develop JSF application with AJAX behaviour, we may experience the problem…
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What is a PermGen leak?
What follows is a practical introduction to a specific type of memory problems in Java applications. Namely – we will…
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Google Guava EventBus and Java 7 WatchService for Event Programming
This post is going to cover using the Guava EventBus to publish changes to a directory or sub-directories detected by…
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Using Cryptography in Java Applications
This post describes how to use the Java Cryptography Architecture (JCA) that allows you to use cryptographic services in your…
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Google Guava MultiMaps
Guava? This is the first in a series of posts where I’ll be attempting to explain and explore Google’s awesome…
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How much memory do I need
What is retained heap? How much memory will I need? This is a question you might have asked yourself (or…
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Calculating A Co-Occurrence Matrix with Hadoop
This post continues with our series of implementing the MapReduce algorithms found in the Data-Intensive Text Processing with MapReduce book.…
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When using direct memory can be faster
Overview Using direct memory is no guarantee of improving performance. Given it adds complexity, it should be avoided unless you…
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Forcing Tomcat to log through SLF4J/Logback
So you have your executable web application in JAR with bundled Tomcat (make sure to read that one first). However…
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