JSON for polymorphic Java object serialization

For a long time now JSON is a de facto standard for all kinds of data serialization between client and…

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Using Delayed queues in practice

Often there are use cases when you have some kind of work or job queue and there is a need…

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Simple but powerful DSL using Groovy

In one of my projects we had very complicated domain model, which included more than hundred of different domain object…

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Apache Mahout: Getting started

Recently I have got an interesting problem to solve: how to classify text from different sources using automation? Some time…

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Storing hierarchical data in MongoDB

Continuing NoSQL journey with MongoDB, I would like to touch one specific use case which comes up very often: storing…

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MongoDB with Spring Data project

All of us are observing the explosion of NoSql solutions these days. I get used to RDBMS but those are…

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