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How to be Big Data-native?


Big data has spawned a set of tools that deliver results beyond the buzz. It has started delivering real insights for companies, which result in more effective decisions. When middleware natively supports big data, big data becomes more than just another option. It becomes the default. Let’s examine this idea: 1.Big Data Storage Whenever you think of storage, (almost) everyone ...

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Introduction To Git Concepts


This post is an introduction/reminder to Git concepts. It aims at facilitating the learning curve for those coming from a Subversion (or other) background. For more details, there is nothing like the official book. Concepts Git operates on repositories which contain a local database of files and corresponding file revisions. Repositories contain files which can have 3 states: Committed – The file ...

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Standalone web application with executable Tomcat


When it comes to deploying your application, simplicity is the biggest advantage. You’ll understand that especially when project evolves and needs some changes in the environment. Packaging up your whole application in one, standalone and self-sufficient JAR seems like a good idea, especially compared to installing and upgrading Tomcat in target environment. In the past I would typically include Tomcat ...

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Guava Preconditions Class


Anyone who’s written much Java has probably written methods that begin with conditionals that verify either the provided parameters or the state of the object being acted upon before proceeding with the remainder of the method’s implementation. These can add verbosity to the method and sometimes, especially if there are multiple checks, can almost drown out the interesting business logic ...

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Guava Stopwatch


Guava‘s Stopwatch is another Guava class new to Guava Release 10 (as is Optional, the subject of another recent post). As its name implies, this simple class provides a method to conveniently measure time elapsed between two code points. It has several advantages over use of System.currentTimeMillis() or System.nanoTime(). I don’t focus on these advantages here, but the Javadoc documentation ...

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Database and Webapp Security


Threat Model This is a discussions on database and webapp security loosely based on the quick reference page on my site. That page is becoming unwieldy and does not make it easy for readers to interact with me or others. Threat Model All security analysis must begin by examining the threat model. A threat model requires you to answer four ...

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Java SE 11: Moving Java Forward


Introduction This serie of article presents how, in my opinion, the java language should evolve to keep being a top choice language. It also presents some features, sometimes already existing in other language, that I love but that cannot (or should never) be part of Java, for some reasons that I will explain. I would really love to transform some ...

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Developer’s wife – Or how do they stand us?


First of all we would like to begin with 2 apologies. The first one is sent to all women developers out there. The points are valid to your husband as well. The second apology is to all women out there. We are really not sociological experts or pretend to be. This post is written from the experience and view point ...

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Introduction To Extreme Programming (XP)


This post is an introduction to Extreme Programming (XP), another of the Agile methods for software application implementation. Reading this post is a prerequisite to this post. The underlying philosophy of Extreme Programming is to take the best elements of software engineering and bring them to an ‘extreme’ level. If a little is good, more will necessarily be better. XP believes that ...

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Guava Functions & Java 8 Lambdas


I recently read Brian Goetz’s The State of the Lambda and after reading that article I wanted to try using Java 8 lambda expressions. In his article, Brian goes on to describe interfaces that have one method as “functional” interfaces. Functional interfaces are almost always used as anonymous classes, with the ActionListener being the canonical example. These “functional” interfaces are ...

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