Some Thoughts about Big Data
“Big Data” gets more and more attention in general and very specific in software development. But, there are some misunderstandings and also some misinterpretations. The first point of […]
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From Virtualization to Big Data: A Change of Paradigm
I had some discussions lately with people about Virtualization and Big Data in regard to I/O performance. After years of work to bring servers into a virtual environment […]
More DetailsLocal Indices on Partitioned Tables
I wrote an article lately about a simple model to understand indices in databases. It may help to read the other article first. In a data processing […]
More DetailsSimple Model for Understanding Database Indices
I had a lot of discussions in the past about databases and indices. The type of the database is not important, as the general design of indices are […]
More DetailsJava: Performance issues with FileInputStream
During the studies of database design with the accompanying toy project DuctileDB, I found some disturbing performance issues. During the implementation of a needed log structured storage, […]
More DetailsThoughts on the Different Kinds of Test
General Remarks Testing shall assure the quality of a product and that development does not break the already implemented functionality. The quality is defined in ISO 9126 for […]
More DetailsTest Approches for Green and Brown Field Projects
The picture on the right side show the relationships between the different test levels. The tests are a kind of test stages in green field projects. Usually, the […]
More DetailsHadoop Client in WildFly – A Difficult Marriage
(This article was triggered by a question “Hadoop Jersey conflicts with Wildfly resteasy” on StackOverflow, because I hit the same wall…) For a current project, I evaluate the […]
More DetailsSoftware Engineering and the 4 Causes of Aristotle
I stumbled on the principle of the 4 causes of Aristotle some years ago when I did some reading about cause and effect, leadership and management. The question […]
More DetailsJavaEE: Arquillian Tests support Multi-WAR-EARs
Before version 1.0.2 Arquillian did not support EAR deployments which contained multiple WAR files. The issue was the selection of the WAR into which the arquillian artifacts are […]
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