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Thoughts on The Reactive Manifesto

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Reactive programming is an emerging trend in software development that has gathered a lot of enthusiasm among technology connoisseurs during the last couple of years. After studying the subject last year, I got curious enough to attend the “Principles of Reactive Programming” course on Coursera (by Odersky, Meijer and Kuhn). Reactive advocates from Typesafe and others have created The Reactive ...

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Using jOOQ with Spring: CRUD

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jOOQ is a library which helps us to get back in control of our SQL. It can generate code from our database and lets us build typesafe database queries by using its fluent API. The earlier parts of this tutorial have taught us how we can configure the application context of our example application and generate code from our database. ...

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ActiveMQ – Network of Brokers Explained

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Objective This 7 part blog series is to share about how to create network of ActiveMQ brokers in order to achieve high availability and scalability. Why network of brokers? ActiveMQ message broker is a core component of messaging infrastructure in an enterprise. It needs to be highly available and dynamically scalable to facilitate communication between dynamic heterogeneous distributed applications which ...

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Seven Databases in Seven Days – Riak

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In this post I am summarizing the three days of Riak, which is the second database in the Seven Databases in Seven Days book. This post is actually in order for me to remember some tweaks I had to do while reading this chapter as sometimes the book wasn’t entirely correct. A good blog, which I used a little, can ...

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We’re Hacking JDBC, so You Don’t Have To

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We love working with JDBC Said no one. Ever. On a more serious note, JDBC is actually a very awesome API, if you think about it. It is probably also one of the very reasons Java has become the popular platform it is today. Before the JDK 1.1, and before ODBC (and that’s a very long time ago) it was ...

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Conway’s Game of Life and the Flyweight Pattern

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Conway’s Game of Life is fascinating, both from a functional and from a technical perspective. This may explain why it’s often used for code retreats. Code retreats are a fun way to learn. It’s amazing how working with new pairs gives you new insights virtually every time.   At the last code retreat that I attended, one of my pairs ...

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Coloring Different Data Sources in IntelliJ IDEA

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The database plugin in IntelliJ IDEA is a useful tool to work with data in databases. As long as we got a JDBC driver to connect to the database we can configure a data source. And then we can run queries, inspect the contents of tables and change data with the database tool window. It is not uncommon to have ...

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Maven and Java multi-version modules

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Introduction Usually, a project has a minimum Java version requirement and that applies to all of its modules. But every rule has its exceptions, as recently I stumbled on the following issue. One open source project of mine mandates Java 1.6 for most of its modules, except one requiring the 1.7 version. This happens when integrating external libraries having different ...

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