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Spring Caching abstraction and Google Guava Cache

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Spring provides a great out of the box support for caching expensive method calls. The caching abstraction is covered in a great detail here. My objective here is to cover one of the newer cache implementations that Spring now provides with 4.0+ version of the framework – using Google Guava Cache In brief, consider a service which has a few ...

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Tomcat to Wildfly: Configuring Database connectivity

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This excerpt has been taken from the “From Tomcat to WildFly” book in which you’ll learn how to port your existing Tomcat architectures to WildFly, including both the server configuration and the applications running on the top of it. WildFly is a fully compliant Java Enterprise Edition 7 container with a much wider set of available services and options compared ...

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A RESTful JDBC HTTP Server built on top of jOOQ

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The jOOQ ecosystem and community is continually growing. We’re personally always thrilled to see other Open Source projects built on top of jOOQ. Today, we’re very happy to introduce you to a very interesting approach at combining REST and RDBMS by Björn Harrtell. Björn Harrtell is a swedish programmer since childhood. He is usually busy writing GIS systems and integrations ...

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JavaFX Tip 15: ListView Autoscrolling

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I recently had to implement autoscrolling functionality for FlexGanttFX and thought that my solution might be useful for others. You find the basic concepts of it in the listing below. The main idea is that a background thread is used to adjust the pixel location of the virtual flow node used by the list view. The thread starts when a drag ...

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How Visi uses Weave and Docker

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I’ve gotten a bunch of questions about how Visi, the simple web front end to Spark works. This blog post is an overview. Hosted Spark with a Simple Front End Visi is a hosted Spark cluster with a simple web-based front end that allows Excel-savvy folks to enter formulas that get turned into Spark jobs. The Spark cluster and front ...

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Pairing with docker-spoon

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Whether you pair or not I think this post is worth reading. Do you ever have needs like this? Ability to create on-demand dev environments with all your dependencies in place? Ability to collaborate with local or remote folks in a low latency environment that doesn’t suck? Want bare metal performance instead of using a VM? Want to kick off ...

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Why you should avoid JSF

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For a long time JSF for me was just another webframework I didn’t cared too much about. This changed. After being forced to use it for a couple of months now, I consider it a major project risk in almost all cases. Here I present the reasons for this verdict. Bad entanglement of UI and processing Logic. The official tutorial ...

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JMeter Tutorial for Load Testing – The ULTIMATE Guide

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This tutorial is about JMeter. These are the main points that we are going to cover: We are going to explain what is JMeter used for. How is JMeter implemented and with what technologies is designed. How to install and configure it properly. We are going to explain the basic features of its user interface. We will detailed explain how ...

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Akka Notes – DeathWatch – 7

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When we talked about Actor lifecycle, we saw that Actors could be stopped by various means (using ActorSystem.stop or ActorContext.stop or sending a PoisonPill – there’s also the Kill and the gracefulStop). Whatever reason an Actor dies, there are cases when a few other actors in the system would like to know about it. Let’s take a trivial example of ...

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