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Use Nexus Repository as openSuse Proxy

Posted on 2021-03-172021-03-17 by Rick-Rainer Ludwig

Explains how to setup Sonatype’s Nexus repository server as openSUSE download proxy to save network bandwidth.

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Posted in AllgemeinTagged build management, nexus, openSUSE, software craftsmanshipLeave a Comment on Use Nexus Repository as openSuse Proxy

Some Thoughts about Big Data

Posted on 2018-06-10 by Rick-Rainer Ludwig

“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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Posted in Software EngineeringTagged Big Data, development, engineering, high performanceLeave a Comment on Some Thoughts about Big Data

From Virtualization to Big Data: A Change of Paradigm

Posted on 2018-06-102020-07-29 by Rick-Rainer Ludwig
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Posted in Software EngineeringTagged Big Data, development, engineering, high performance1 Comment on From Virtualization to Big Data: A Change of Paradigm

Local Indices on Partitioned Tables

Posted on 2017-12-162020-07-29 by Rick-Rainer Ludwig

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 […]

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Posted in Software EngineeringTagged Database, development, engineering, high performance, optimizationLeave a Comment on Local Indices on Partitioned Tables

Simple Model for Understanding Database Indices

Posted on 2017-12-15 by Rick-Rainer Ludwig

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 […]

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Posted in Software EngineeringTagged Database, development, engineering, high performance1 Comment on Simple Model for Understanding Database Indices

Java: Performance issues with FileInputStream

Posted on 2017-12-152017-12-15 by Rick-Rainer Ludwig

 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, […]

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Posted in Software EngineeringTagged development, engineering, high performance, high performance programming, programmingLeave a Comment on Java: Performance issues with FileInputStream

Thoughts on the Different Kinds of Test

Posted on 2017-12-132017-12-15 by Rick-Rainer Ludwig

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 […]

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How to handle objects with a life cycle

Posted on 2017-12-13 by Rick-Rainer Ludwig

In C++ and other programming languages, constructors are paired with destructors. These help to close file handles, database connections and the like in case the object is destroyed. […]

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Posted in Software EngineeringTagged Design, lifecycle, OOPLeave a Comment on How to handle objects with a life cycle

eXtended Objects: ORM for No-SQL Databases in JavaEE

Posted on 2017-05-01 by Rick-Rainer Ludwig

Since the appearance of object relational mappers (ORM) the programming of persistence layers became easier and less error prone. ORMs store objects in SQL databases by interpreting the […]

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Posted in Software EngineeringTagged Database, Java, JavaEE, ORMLeave a Comment on eXtended Objects: ORM for No-SQL Databases in JavaEE

Implementation of a complex Java Iterator

Posted on 2017-05-012017-12-13 by Rick-Rainer Ludwig

In a lot of situations it is better to handle data as streams to keep the memory profile low and to decrease latency. To access data in such […]

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Posted in AllgemeinTagged Iterator, OOPLeave a Comment on Implementation of a complex Java Iterator

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Recent Posts

  • Use Nexus Repository as openSuse Proxy 2021-03-17
  • Some Thoughts about Big Data 2018-06-10
  • From Virtualization to Big Data: A Change of Paradigm 2018-06-10
  • Local Indices on Partitioned Tables 2017-12-16
  • Simple Model for Understanding Database Indices 2017-12-15

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