Neo4j News

Update on Neo4j Ruby bindings

2010-03-12T11:22:00.006+01:00

During 2010 there's been two releases of the Neo4j.rb JRuby bindings for the Neo4j graph database so far. Time to catch up with what's new!

Version 0.4.0 of Neo4j.rb came with improved traversal performance, more options on how to use relationships, for instance relationships can now be indexed. Version 0.4.1 gave us migrations and access to a batch inserter for big import-once data volumes.

In the last days of 2009, neo4jr-simple was first released. It's a simple ready to go wrapper for Neo4j and currently in version 0.2.1. Make sure to check out the neo4jr-social example application as well!

Great thanks to Andreas Ronge, Matthew Deiters and all the other contributors for the awesome stuff!

Neo4j 1.0 released

2010-02-23T14:57:00.007+01:00

Recently version 1.0 of Neo4j was released. There has been a Neo Technology news post regarding this event, as well as a blog post on how to get to know Neo4j. The distribution is available as binary and source packages from the downloads page.

For more information, read the list mail announcement and check out the details in the changelog.

A few pointers to stuff that happened around and after the release:

InfoWorld article: Databases primed for social networks
MyNoSQL blog: Get a Taste of Graph Databases: InfoGrid and Neo4j
A Neo4j plugin for Griffon has been created, with a sample application as well
Peter Neubauer on Neo4j - a graph database Chariot TechCast by Ken Rimple

As always, feedback to the mailing list, on Twitter or directly to us.

Neo4j 1.0-b11 released: stability & robustness

2009-12-27T20:03:00.000+01:00

Neo4j 1.0-b11 — the open source nosql graph database — has been released. This is the last beta before we (after 6 years in commercial 24/7 production use) finally feel that we have a version that is worthy of 1.0. This means that the main focus of this release is stability and robustness rather than features. Having said that, Neo4j 1.0-b11 still includes amongst other things a new batch inserter version that implements the NeoService API (to minimize the impact of first-time imports on the rest of your code) and a lot of cleanup and improvements of the indexing utilities.

Download the Neo4j Core release or the Apoc bundle here.

For more information, read the list mail announcement and check out the details in the changelog.

As always, feedback to the mailing list, on Twitter or directly to us.

Neo4j 1.0-b10 released: read-only mode & faster deep traversals

2009-11-03T00:39:00.004+01:00

Neo4j 1.0-b10 - the open source nosql graph database - has been released with new features including a read-only mode, improved depth first traversal speed due to an iterator implementation all the way down to the native store layer and faster recovery process when starting up after a crash. Download the Neo4j Core release or the Apoc bundle here.

For more information, read the list mail announcement and check out the details in the changelog.

As always, feedback to the mailing list, on Twitter or directly to us.

NoSQL East & semweb meetup in DC

2009-10-12T09:33:00.002+02:00

Emil will represent Neo4j at two upcoming event: Emil and Tim Berners-Lee -- I'm sorry Sir Tim Berners-Lee, the father of the web -- will speak at the semantic web meetup in association with ISWC in Washington DC on Oct 27 2009.

After that, we're heading straight to nosql east where our commercial backer Neo Technology will sponsor the conference and Emil will give a Neo4j talk.

If you're attending either one or are just in the area, please ping us so we can grab a beer.

Initial release of Neo4j Grails plugin

2009-10-05T11:26:00.006+02:00

As announced by Stefan Armbruster on the Neo4j and Grails mailing lists, the initial 0.1 version of the Neo4j Grails plugin has been released by him. Read the full announcement in this blog post. Grails is a web application framwork based on the Groovy langauge. At the moment the plugin has support for the basic CRUD operations and also exposes the underlying node of each domain object through a property.

Different people have requested such a plugin previously, so it's exiting news that the plugin now exists.

Stefan has also provided example code for how to use the plugin. Basic domain classes may look like this:

class Author { 
    String name
    Date dob
    static hasMany = [ books: Book ]
}

class Book {
    String title
    static belongsTo = [ author:Author ]
}

After adding a little data to the domain the node space will look like this (click for bigger version):

Further information is found on the Neo4j wiki Grails page.

Neo4j at JAOO 2009 Oct 4 - 8

2009-10-04T23:51:00.005+02:00

Emil from the Neo4j crew is right now making the streets of Aarhus, Denmark, unsafe for RDBMS fans. Why? Because Oct 4th is kicking off the week of JAOO 2009!

Emil will give an introductory Neo4j talk in the morning slot of the first day. If you're attending and want a free beer or just discuss some #nosql or graph database goodness, please stop by and say hi!

Neo4j.rb 0.3.2 released

2009-09-28T09:06:00.007+02:00

Andreas Ronge, Martin Kleppmann and the other contributors have recently released Neo4j.rb 0.3.2. The project on GitHub now has thirteen forks. The release announcement was sent to the Neo4j Ruby group.

Major points from the changelog:

experimental support for aggregating nodes
traversal with traversal position
addition of the graph-algo AllSimplePaths algorithm
upgrade to Neo4j-b9 with a Neo4j.all_nodes method added

Neo4j 1.0-b9 released: batch insert mode & new adaptive cache

2009-08-17T16:27:00.000+02:00

Neo4j 1.0-b9 — the open source graph database — has been released with new features including a batch insert mode for bulk import, optimized read-only transactions and a new adaptive cache implementation. Download the Neo4j Core release or the Apoc bundle here.

For more information, read the list mail announcement and check out the details in the changelog.

As always, feedback to the mailing list, on Twitter or directly to us.

Neo4j.rb 0.3.0 released - REST support included

2009-06-25T23:57:00.000+02:00

Andreas Ronge released a new versions of the JRuby library for Neo4j. The 0.3.0 release focuses on event handling, list support and lots of other things. The really big news this time is the REST API support contributed by Martin Kleppmann. For more information about this release read the full changelog. There's also documentation to read, and you can find out what's going on at the project page.

Convenient package Neo4j Apoc 0.1 released

2009-05-09T00:17:00.006+02:00

Today we released the first version of Neo4j Apoc. Apoc is an acronym for A Package Of Components and it bundles a handful of useful Neo4j components into a single download.

We created Apoc because we noticed that we always included the same set of initial components in our projects. Additionally, one of the most frequent questions we get on for example the user mailing list is 'how do you find a node by property value?' The answer is 'well, you use index-util, which you can download from the maven site.'

Now you don't have to. If you use Apoc, you already have index-util on your classpath as well as a component for remote access (remote-neo) and a command-line browser.

Feel free to check it out and please give us feedback as usual!

Neo4j 1.0-b8 released: online backup & improved performance

2009-05-03T23:52:00.011+02:00

Neo4j 1.0-b8 — the open source graph database — was released today with a major set of features including incremental online backup of running Neo4j instances, reduced memory footprint and lots of performance improvements. Download it here.

While this is officially a beta release, we've had later stage snapshots running in production for a couple of months on several production systems. Grab it fresh off the presses, read the list mail announcement and check out the details in the changelog.

As always, feedback to the mailing list, on Twitter or directly to us.

Neo4j at OSCON 2009

2009-04-19T01:56:00.005+02:00

In late July, the Neo4j team will attend OSCON -- the O'Reilly Open Source Conference! Emil will give a talk titled Neo4j - The Benefits Of Graph Databases. If you're in the area, please stop by and say hi!

First complete Neo4j sample app

2009-02-11T10:30:00.003+01:00

The IMDB example 1.0, a Neo4j-based web application using part of the IMDB actors/movies dataset, has been released. The application lets the user search for or browse through actors and movies. For actors, it also shows their Bacon path as well. Here's how it can look:

The application itself is accompanied by thorough instructions and explanations. This way you can learn how to model a domain using the graph database paradigm inherent to Neo4j. Other important points is organizing data for searches, finding paths and handling transactions.

One nice thing about Neo4j is its whiteboard friendliness. This is a sketch of the IMDB domain model ... no, wait, it's the implementation:

The application itself is based on Spring Framework and packaged using Maven 2.

For those who want to get started right away, here's a quick how-to (requiring mvn and svn to be already installed). Enter the following at the command line (all at once):

mkdir imdb && 
cd imdb && 
mvn scm:checkout -DconnectionUrl=scm:svn:https://svn.neo4j.org/examples/imdb/tags/1.0/ && 
cd target/checkout && 
mvn jetty:run

Then browse to http://localhost:8080/imdb/setup.html to load the data and use the application. Use ctrl-c in the same console to stop the application.

From the main page of the Neo4j IMDB example you will find your way to the location of downloadable zip files as well if that's what you prefer.

Neo4j.rb 0.2.0 released

2009-02-02T11:44:00.003+01:00

Andreas Ronge keeps releasing new versions of his JRuby library for Neo4j. The 0.2.0 release focuses on traversals and filtering. For more information about this release read the full changelog. There's also an introduction to read, and you can find out what's going on at the project page.

Neo4j.rb reached first milestone

2009-01-14T10:43:00.004+01:00

The JRuby bindings for Neo4j by Andreas Ronge has reached its first milestone with version 0.1.0. See the project page for more information. Highlights from the changelog: enhancements to properties, indexing with Date/DateTime, YARD documentation.

The bottom line is that it's time to try it out and give Andreas some feedback. You can follow the development and file issues over at the Lighthouse project page.

Neo4j at QCon SF 2008

2008-11-18T23:43:00.004+01:00

The Neo4j team is attending this year's QCon SF! On Friday Nov 21st, Emil will give a talk entitled "Neo4j -- the benefits of graph databases". If you are there, please stop by and say hi! Update: The slides are now available on SlideShare.

Welcome to Neo4j News!

2008-11-18T17:19:00.006+01:00

news.neo4j.org is the new site where the neo4j project posts about releases, talks and other news. Stay tuned for more ways to get information on what's going on in the neo4j community! - Through our team page you can find out more about what we are doing at the moment.

Neo4j 1.0-b7 released

2008-09-29T12:27:00.001+02:00

Today the long awaited seventh beta of Neo4j was released. For more information see the release mail and list of changes. Download the binary and source from our download page.

Neo4j at FooCamp and in O’Reilly News

2008-07-13T10:54:00.005+02:00

The Neo4j team attended this year’s fantastic FooCamp and amongst other things co-lead a session on “Persistence in a post-relational world.” O’Reilly News picked up the noise and made this nice Neo4j writeup.

Article at InfoQ

2008-06-06T01:35:00.000+02:00

InfoQ has a nice writeup about Neo with some interesting discussion afterwards.

Neo at JavaOne

2008-05-07T10:38:00.001+02:00

The Neo team is hacking JavaOne 2008! Tobias is giving a talk and the rest of the crew is dealing out free beer. If you’re around and want to chat or grab a beer, please drop us (Emil and Tobias) a note!

Neo talk at Java Posse Roundup

2008-04-14T18:08:00.001+02:00

At The Java Posse Roundup 2008, Tobias Ivarsson did a lightning talk about Neo. Watch it on YouTube.

Neo4j 1.0-b6 released under the AGPLv3

2007-11-19T23:21:00.001+01:00

Today the latest and last beta of Neo4j was released as free software under the GNU Affero General Public License v3. For more info, see the release mail. Grab the binary and source at our download page.