groovyblogs.org - Recent Entries (Last 7 Days)

Neo4j 2.0 Released: 5 Ways It Will Help You Kick Ass

Groovy Zone - Everything for the Groovy & Grails developer [ 0 clicks ] - 7 minutes ago

[This post was originally written by Peter Neubauer]Christmas is near, and to ease the tension until the big event, we thought we'd give you an early present this year. Neo4j 2.0 - a graph database fo...

Grails Goodness: Debugging App in Forked Mode

Messages from mrhaki [ 43 clicks ] - 2 hours 22 minutes ago

Since Grails 2.2 by default the run-app command will launch the Grails application in a separate Java Virtual Machine. This is called forked Tomcat execution in Grails. This way the class path of the ...

Tuning MongoDB Performance with MMS

Groovy Zone - Everything for the Groovy & Grails developer [ 101 clicks ] - 9 hours 35 minutes ago

At MongoLab we manage thousands of MongoDB clusters and regularly help customers optimize system performance. Some of the best tools available for gaining insight into our MongoDB deployments are the ...

Neo4j: Using Aliases to Handle Messy Data

Groovy Zone - Everything for the Groovy & Grails developer [ 44 clicks ] - 9 hours 35 minutes ago

One of the common problems when building data-heavy applications is that names of things in the domain are often named differently depending on which system you get the data from. This means that we...

Why Elasticsearch? - Refactoring Story, Part 3

Groovy Zone - Everything for the Groovy & Grails developer [ 101 clicks ] - 9 hours 35 minutes ago

As part of a system refactoring process, we replaced a legacy search system with Elasticsearch. Being a core component of our system it literally took us more than half a year to move to the new sys...

When Hadoop Gets Stuck: Debugging Hive

Groovy Zone - Everything for the Groovy & Grails developer [ 107 clicks ] - 9 hours 35 minutes ago

This recent article from David Chaiken at Altiscale discusses how to debug Hive (Hadoop) through an anecdote regarding a customer's struggling Hive job. Preview Text: ...

Grails Goodness: Rendering Partial RESTful Responses

Groovy Zone - Everything for the Groovy & Grails developer [ 84 clicks ] - 9 hours 35 minutes ago

Grails 2.3 added a lot of support for RESTful services. For example we can now use a respond() method in our controllers to automatically render resources. The respond() method acc...

Kill A Process With A Specific Command Line From The Command-Line In Windows

Transentia [ 280 clicks ] - 1 day 7 hours 13 minutes ago

You learn something new every day! After a bit of wrestling with windows’ tasklist and taskkill tools, I finally took to the faboulous interweb and came up with this, viz: wmic Path win32_proces...

21 Presentations from NoSQL Matters

Groovy Zone - Everything for the Groovy & Grails developer [ 232 clicks ] - 1 day 8 hours 4 minutes ago

The NoSQL Matters conference took place in Barcelona on November 30th, and now you can find slides from the presenters all collected in one place. Also, they aren't posted yet, but videos should be co...

Neo4j and Cypher: Creating Relationships Between Nodes From Adjacent Rows in a Query

Groovy Zone - Everything for the Groovy & Grails developer [ 182 clicks ] - 1 day 8 hours 4 minutes ago

I want to introduce the concept of a season into my graph so I can have import matches for multiple years and then vary the time period which queries take into account. I started by creating season ...

Big Data Search with Solr and Hadoop

Groovy Zone - Everything for the Groovy & Grails developer [ 225 clicks ] - 1 day 8 hours 4 minutes ago

This set of slides from Mark Miller on the applications of Apache Solr and Hadoop in search takes an interesting look at one of the key uses of Solr with Hadoop. The slides give a brief overview of th...

Grails Goodness: Using Closures for Select Value Rendering

Messages from mrhaki [ 130 clicks ] - 2 days 2 hours 46 minutes ago

To generate an HTML select we can use the Grails tag <g:select .../>. We use the optionValue attribute to specify a specific property we want to be used as the value. But we can also define a cl...

Grails Goodness: Rendering Partial RESTful Responses

Messages from mrhaki [ 123 clicks ] - 2 days 2 hours 46 minutes ago

Grails 2.3 added a lot of support for RESTful services. For example we can now use a respond() method in our controllers to automatically render resources. The respond() method accepts a resource inst...

Presentation: Programming in the Cloud - Groovy as an Extension Language for Oracle ADFm

InfoQ Personalized Feed for Marco Cicolini [ 147 clicks ] - 2 days 9 hours 1 minute ago

Jim Driscoll discusses using ADFm to create and change Groovy scripts at runtime and debugging a live system with JWDP. By Jim Driscoll

Presentation: RESTful Groovy

InfoQ Personalized Feed for Marco Cicolini [ 164 clicks ] - 2 days 9 hours 1 minute ago

Kyle Boon reviews 3 frameworks for building RESTful WS- Grails, Dropwizard and Ratpack-, comparing their code readability, maintainability, deployment, metrics collection, scalability and testability....

Why the MongoDB Haters are Wrong

Groovy Zone - Everything for the Groovy & Grails developer [ 277 clicks ] - 2 days 9 hours 45 minutes ago

This article by David Mytton at Server Density, over a year old but reinvigorated by the recent "never use MongoDB" incident and its aftermath, takes an interesting look at last year's wave of MongoDB...

Introduction to Machine Learning: Everything You Need to Know

Groovy Zone - Everything for the Groovy & Grails developer [ 255 clicks ] - 2 days 9 hours 45 minutes ago

This presentation from Hilary Mason at devs love bacon in April, titled "Everything You Need to know about Machine Learning in 30 Minutes or Less," is an introduction to machine learning for those who...

Grails Diary - Week 49

Grails Diary [ 349 clicks ] - 2 days 22 hours 4 minutes ago

The Grails team is again working high speed, and have released version 2.3.4 ( release notes ), fixing 35 bugs. The JavaOne rock stars for 2013 have been announced . Big congratulations to eve...

The Best of the Week (Nov. 29): NoSQL Zone

Groovy Zone - Everything for the Groovy & Grails developer [ 319 clicks ] - 3 days 8 hours 31 minutes ago

Make sure you didn't miss anything with this list of the Best of the Week in the NoSQL Zone (Nov. 29 to Dec. 5). Here they are, in order of popularity:1. An Entertaining Cartoon That Explains Apache...

The Best of the Week (Nov. 29): Mobile Zone

Groovy Zone - Everything for the Groovy & Grails developer [ 275 clicks ] - 3 days 8 hours 31 minutes ago

Make sure you didn't miss anything with this list of the Best of the Week in the Mobile Zone (Nov. 29 to Dec. 5). Here they are, in order of popularity:1. How to Optimize Android Apps for Superior P...

The Best of the Week (Nov. 29): Big Data Zone

Groovy Zone - Everything for the Groovy & Grails developer [ 253 clicks ] - 3 days 8 hours 31 minutes ago

Make sure you didn't miss anything with this list of the Best of the Week in the Big Data Zone (Nov. 29 to Dec. 5). Here they are, in order of popularity:1. Curing Cancer with Data VisualizationEver...

On Eventually Consistent Data

Groovy Zone - Everything for the Groovy & Grails developer [ 432 clicks ] - 4 days 9 hours 54 minutes ago

Eventually consistent data seems to be the buzzword nowadays, especially in any NoSQL discussion. For those not versed in tech talk, having eventually consistent data means that you��re willing to...

Enzo moved to Bitbucket

Harmonic Code [ 424 clicks ] - 4 days 23 hours 23 minutes ago

This is just a short blogpost about some modifications to the Enzo project. First of all I changed the build from one monolithic project to a multi project gradle setup.With this approach each pa...

Presentation: Metaprogramming With The Groovy Compiler - Part 2/2

InfoQ Personalized Feed for Marco Cicolini [ 175 clicks ] - 5 days 1 hour 30 minutes ago

Jeff Scott Brown discusses Groovy��s compile time metaprogramming capabilities. By Jeff Scott Brown

Yelp Graph: Business Clustering Based on Check-In Data

Groovy Zone - Everything for the Groovy & Grails developer [ 156 clicks ] - 5 days 8 hours 30 minutes ago

Recently, Yelp made available a sample dataset from the greater Phoenix metropolitan area including around 11,000 businesses, 8,000 check-in sets, 43,000 users and 230,000 user reviews. With the help ...

Data Loading Neo4j Graphs From SQL Sources

Groovy Zone - Everything for the Groovy & Grails developer [ 140 clicks ] - 5 days 8 hours 30 minutes ago

Neo4j is a powerful graph database that can be used for analytics, recommendation engines, social graphs and many more applications. In the following example we demonstrate in a few steps how you can ...

A Guide to R Programming for Experienced Developers

Groovy Zone - Everything for the Groovy & Grails developer [ 330 clicks ] - 5 days 8 hours 30 minutes ago

Experienced developers interested in learning more about programming in R have a fantastic resource in John Cook's "R programming for those coming from other languages." Cook's guide assumes an unders...

Generating UML diagrams with GroovyFX and PlantUML

odelia technologies - Groovy [ 229 clicks ] - 5 days 20 hours 31 minutes ago

PlantUMLFX is a JavaFX 2 application implemented with a single Groovy script, PlantUMLFX.groovy, that allows you to generate UML diagrams with the help of PlantUML. PlantUMLFX 's source code is avail...

Proof of Concept for Building Websites Mobile First

Groovy Zone - Everything for the Groovy & Grails developer [ 473 clicks ] - 6 days 10 hours 35 minutes ago

I've been thinking recently about techniques for building websites for multiple screen sizes. Preview Text: You may want to show different elements o...

Neo4j: What is a Node?

Groovy Zone - Everything for the Groovy & Grails developer [ 404 clicks ] - 6 days 10 hours 35 minutes ago

One of the first things I needed to learn when I started using Neo4j was how to model my domain using nodes and relationships and it wasn��t initially obvious to me what things should be nodes. Luc...

A Query on Confirmation

Groovy Zone - Everything for the Groovy & Grails developer [ 350 clicks ] - 6 days 10 hours 35 minutes ago

[This post is part of an ongoing challenge to understand 52 papers in 52 weeks. You can read previous entries, here, or subscribe to get notified of new posts by email.][Editor's note: Entries on DZon...