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Ganglia configuration for a small Hadoop cluster and some troubleshooting

Ganglia is an open-source, scalable and distributed monitoring system for large clusters. It collects, aggregates and provides time-series views of tens of machine-related metrics such ...
json-logo

How to Use PropertyNamingStrategy in Jackson

Jackson api is used extensively to convert json to Object and Object to JSON.So if you have a json string and want to convert it in a java object , create field names of bean same as ...
java-logo

Function interface – A functional interface in the java.util.function package in Java 8

I had previously written about functional interfaces and their usage. If you are exploring the APIs to be part of Java 8 and especially those APIs which support lambda expressions you ...
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Life Beyond Rete – R.I.P Rete 2013 :)

I’m just putting the final touches onto my new algorithm. It merges concepts from Leaps, Collection Oriented Match and Left/Right unlinking, as well as a few ideas of my own. ...
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Java 8 Lambdas – The missing link to moving away from Java

I learnt functional programming, but then I decided I liked imperative programming better so I switched back. — Nobody, ever Moving from imperative programming to functional programming ...
neo4j-logo

Testing Spring Data Neo4j Applications with NoSQLUnit

Spring Data Neo4j is the project within Spring Data project which provides an extension to the Spring programming model for writing applications that uses Neo4j as graph database. To ...
apache-tomcat-logo

Tomcat in Eclipse: 6 popular “how to” questions

Learning a new technology is always a hard process. This process becomes even more difficult when you are trying to learn two technologies which are going to interact with each other. ...
jgroups-logo

Using JGroups Directly From JBoss AS 7 Component

JGroups is Bela Ban‘s piece of software for reliable message exchange that is highly configurable and can use either TCP or UDP as a transport protocol. Basically – you run the ...
java-logo

Java StringBuilder myth debunked

The myth Concatenating two Strings with the plus operator is the source of all evil — Anonymous Java dev NOTE: The source code for the tests discussed here can be found on Github It’s ...
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Java EE 7 and EJB 3.2 support in JBoss AS 8

Some of you might be aware that the Public Final Draft version of Java EE 7 spec has been released. Among various other new things, this version of Java EE, brings in EJB 3.2 version ...
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