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SiftingAppender: logging different threads to different log files

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One novel feature of Logback is SiftingAppender (JavaDoc). In short it’s a proxy appender that creates one child appender per each unique value of a given runtime property. Typically this property is taken from MDC. Here is an example based on the official documentation linked above:               <?xml version="1.0" encoding="UTF-8"?> <configuration> <appender name="SIFT" class="ch.qos.logback.classic.sift.SiftingAppender"> ...

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Monitoring S3 uploads for a real time data

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If you are working on Big Data and its bleeding edge technologies like Hadoop etc., the primary thing you need is a “dataset” to work on. So, this data can be reviews, blogs, news, social media data (Twitter, Facebook etc), domain specific data, research data, forums, groups, feeds, fire hose data etc. Generally, companies reach the data vendors to fetch ...

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Spring: To autowire or not to autowire

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Since using Spring 2.5, I switched from the XML-based application context to the annotations. Although I find those very useful and huge time savers, I’ve always had the feeling that I was losing something in term of flexibility. In particular the @Autowired annotation – or the standard @Inject – felt to me like the new “new”, increasing the coupling between ...

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Spring Social Twitter Setup

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In the first part of this series, we looked at how we could consume the StackExchange REST API in order to retrieve its top questions. This second part will focus on setting up the support necessary to interact with the Twitter REST APIs using the Spring Social Twitter project. The end goal is to be able to tweet these questions, ...

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Zen and the Art of Collaborative Software Development

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Conway’s law suggests that designs are constrained by organizational communication structures.  I’ve seen that law manifest itself over and over again and I’d assert that it is impossible to develop a cohesive software platform unless the proper collaborative dynamics exist.  Specifically, to develop a software platform that can satisfy the needs of many different product-lines, consumers, and/or dependent projects, you ...

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Understanding Transport Layer Security / Secure Socket Layer

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Transport Layer Security (TLS) 1.0 / Secure Sockets Layer (SSL) 3.0, is the mechanism to provide private, secured and reliable communication over the internet. It is the most widely used protocols that provides secure HTTPS for internet communications between the client (web browsers) and web servers. It ensures that the transport of sensitive data are safe from cyber crimes which ...

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Java 7 Update 21 Security Improvements in Detail

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Oracle released three updates to Java yesterday. It is important to note that they contain several security related changes. The majority of those changes have been announced since a while and first thing to notice is, that Oracle ships as planned. Oracle’s Java Platform Security ManagerMilton Smith recently gave a talk at DevoxxUK titled “Securing the Future with Java” where ...

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Drools decision tables with Camel and Spring

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As I’ve shown it in my previous post JBoss Drools are a very useful rules engine. The only problem is that creating the rules in the Rule language might be pretty complicated for a non-technical person. That’s why one can provide an easy way for creating business rules – decision tables created in a spreadsheet! In the following example I ...

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Let us write a document style Web Service

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You might be aware that there are mainly four different styles of web services we can make use of. They are as follows: Document/Literal Document/Literal Wrapped RPC/Encoded RPC/Literal Of course the RPC/Encoded style is now deprecated. If you are interested you can read up on the different styles of web services and their pros on cons on this very comprehensive ...

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Agile Product Planning: Vision, Strategy, and Tactics

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Product planning is just as important in an agile context as it is in a traditional setting. Unfortunately, some product owners focus so much on the product details and the tactical level that other planning aspects are neglected. But writing the right user stories and creating the right user interface design is difficult, if we haven’t thought about the product ...

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