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Ideal Messaging Capabilities for Streaming Data

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What capabilities should you look for in a messaging system when you design the architecture for a streaming data project? To answer that question, let’s start with a hypothetical IoT data aggregation example to illustrate specific business goals and the requirements they place on messaging technology and data architecture needed to meet those goals. The situation is a drilling operation ...

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Understanding Transactional annotation in Spring

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1. Introduction Spring provides support for both programmatic and declarative transactions . 1.1 Programmatic Transactions With programmatic transactions, transaction management code needs to be explicitly written so as to commit when everything is successful and rolling back if anything goes wrong. The transaction management code is tightly bound to the business logic in this case. 1.2 Declarative Transactions Declarative transactions ...

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How to Integrate Custom Data Sources Into Apache Spark

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Streaming data is a hot topic these days, and Apache Spark is an excellent framework for streaming. In this blog post, I’ll show you how to integrate custom data sources into Spark. Spark Streaming gives us the ability to stream from a variety of sources while using the same concise API for accessing data streams, performing SQL queries, or creating ...

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ANTLR and the web: a simple example

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ANTLR on the web: why? I started writing my first programs on MS-DOS. So I am very used to have my tools installed on my machine. However in 2016 the web is ubiquitous and so our languages could be needed also there. Possible scenarios: ANTLR also on the web: users could want to access and possibly to minor changes files ...

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Elastic infrastructure in practice

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A couple of weeks ago I got a rare opportunity to get my hands dirty in the infrastructure field. Being an interesting change to my day-to-day hours deep under the hood of the JVM internals, I thought to share the motivation and results with you. Hopefully it serves as an inspiration to similar problem categories out there. Background I will ...

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Top Performance Metrics for Java, .NET, PHP, Node.js, and Python

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No application is the same. Some legacy apps were built in a monolithic environment built on a homogeneous language, say Java or .NET. As environments become more distributed, and technology has innovated to a near-breaking speed, application architectures tend to be built using a multitude of languages often leveraging the more dynamic languages for specific use cases. Luckily, these distributed ...

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Couchbase on Mesos using DC/OS and Amazon

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Couchbase Docker container can easily run on a variety of orchestration platforms: Couchbase Docker Container Couchbase on Docker Swarm Couchbase on Kubernetes Couchbase on OpenShift 3 Docker container using Apache Mesos and Marathon explained how to setup Mesos, Marathon, and run a simple Docker image. The setup was quite involving and a bit flaky. It required to download and Install Mesos Master and Slave, ZooKeeper, Docker Engine, and ...

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Don’t Hate the HATEOAS Part Deux: Springtime for HATEOAS

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In the much belated conclusion to my series on HATEOAS, we will be diving into how to implement HATEOAS using Spring-Data-REST and Spring-HATEOAS. It is springtime for HATEOAS! I put together a functioning project that will demonstrate the code examples I have below as well as a few other features. The project can be found here: https://github.com/in-the-keyhole/hateoas-demo-II. JDK 8 and Maven are ...

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Requirements in an Agile World

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On a recent project, there was a pain point where Stories with unclear requirements were ending up with developers. Time was then spent trying to clarify the missing pieces meaning less time to write great code and meaning that developers ended up under even more pressure to get things done. Now, there are many reasons why Development teams struggle to ...

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