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Core Java
Google Guava BloomFilter
When the Guava project released version 11.0, one of the new additions was the BloomFilter class. A BloomFilter is a…
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Core Java
Busting PermGen Myths
In my latest post I explained the reasons that can cause the java.lang.OutOfMemoryError: PermGen space crashes. Now it is time…
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Agile
Agile is Not for Everyone
Someone asked me again about self-assessments for their agile transition. That got me thinking about this problem of transitioning to…
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Enterprise Java
TaskletStep Oriented Processing in Spring Batch
Many enterprise applications require batch processing to process billions of transactions every day. These big transaction sets have to be…
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Enterprise Java
ActiveMQ: Understanding Memory Usage
As indicated by some recent mailing list emails and a lot of info returned from Google, ActiveMQ’s SystemUsage and particularly…
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Enterprise Java
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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Groovy
A very light Groovy based web application project template
A very light Groovy based web application project template You might have heard of the project Grails is a Groovy…
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Core Java
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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Software Development
Git: Committing vs Pushing vs Stashing – OR: “what to do if I just want to work locally”
Many people ask me for advice when they’re trying to modify some code locally without the changes finding their way…
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