1. Real-Time Chat App with Server Side Push in ~200 Lines of Code

    Last night I happened to come across a link to Vaadin - an open source framework for rich single page web applications. I first heard about Vaadin about 6 to 7 years ago when my team at the time was evaluating different Java web presentation frameworks for a project. We…

    on Spring Spring Boot Groovy Chat Wicket Vaadin PubNub Microservices Java

  2. Production-Ready Features with Spring Boot Actuator

    Today, I am going to give a lightning talk at work about the production-ready features of Spring Boot Actuator. I recently utilized this module in the latest microservice I deployed to production. With very little work, I was able to include auditing, health monitoring and metrics in the application. Enjoy…

    on Java Groovy Microservices Spring Spring Boot Deployment JVM

  3. Cleaner and Leaner Groovy

    A few weeks ago, I gave a lightning talk / brown bag at work about the Groovy programming language. Here are my slides... Cleaner and Leaner Groovy from Rowell Belen…

    on Java Groovy

  4. Publish Calculated Measures from PDI to Analyzer in Pentaho 6.0

    One of the many features my team included in upcoming 6.0 release of Pentaho Data Integration EE is the ability to define calculated measures in PDI and publish the model to the BI Server. The screencast below demonstrates a sample workflow from PDI (data integration / data modeling ) to Pentaho…

    on PDI Steps Analytics PDI SDR Data Warehouse Modeling ETL Data Refinery

  5. Streamlined Data Refinery with Pentaho Data Integration 5.4

    During the past year, my team has been working on delivering the "last mile" of Pentaho's Streamlined Data Refinery vision. This "last mile" represents the last hurdle linking the world of ETL and data exploration. Background In a typical Pentaho ETL workflow, PDI ingests data from virtually any data source…

    on Analytics PDI SDR Data Warehouse Modeling ETL