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Daniel Bartl03/05/13
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An Online Recommendation Engine with MongoDB and Mahout

This is the second entry of the series of blog posts about building an online recommendation system based on MongoDB and Mahout.

Eric Genesky03/05/13
1857 views
0 replies

Install MongoDB on Ubuntu

Here's a 15-minute tutorial for getting started with MongoDB on Ubuntu.

Eric Genesky03/05/13
2873 views
0 replies

OrientDB Graph Edition Tutorial

Here's an official tutorial hosted on Google code on OrientDB, a NoSQL database management system written in Java. . .

Peter Zaitsev03/04/13
2105 views
0 replies

InnoDB Full-text Search in MySQL 5.6

In part 1, we took a quick look at some initial configuration of InnoDB full-text search and discovered a little bit of quirky behavior; here, we are going to run some queries and compare the result sets . . .

Ayende Rahien03/04/13
1165 views
0 replies

Indexes and the death of temporary indexes

RavenDB’s ability to analyze your queries and generate the required indexes on the fly has always been a great boon.

Eric Genesky03/04/13
1534 views
0 replies

TouchDB-Mono: Cross-Platform Mobile NoSQL

Here's an introduction to TouchDB, a CouchDB-compatible database engine.

Rodrigo De Castro03/04/13
2038 views
0 replies

Spanner: Google's Globally-Distributed Database

As a globally-distributed database, Spanner provides several interesting features.

Eric Genesky03/03/13
3568 views
0 replies

Asynchronous Messaging Architecture with NoSQL

Here's a session from JavaOne 2012 that focuses on using NoSQL databases as a JMS message store in Java messaging applications. Databases covered include MongoDB, Redis . . .

Giuseppe Vettigli03/03/13
1515 views
0 replies

Selection Sort Animated

Lately I bumped in the Wikipedia page dedicated to the Selection Sort algorithm and I found an interesting animation that shows its behavior.

Ayende Rahien03/02/13
1697 views
0 replies

LevelDB and Windows: It Ain't a Love Story

I have been investigating the LevelDB project for the purpose of adding another storage engine to RavenDB. The good news is that there is a very strong likelihood that . . .

Mario Sannum03/02/13
1312 views
0 replies

Going NoSQL with SQL

Some time ago I discovered, by the help of a colleague, a NoSQL database for SQL-server. More specifically a document oriented db-provider for SQL-server, written in C#.

Mark Needham03/01/13
3478 views
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Neo4j: Loading Data - REST API vs Batch Import

A couple of weeks ago when I first started playing around with my football data set I was loading all the data into neo4j using the REST API via neography which was taking around 4 minutes to load.

Eric Genesky03/01/13
1727 views
0 replies

NoSQL Week in Review #16

This week around the NoSQLsphere, we found an interesting best practices list for Java devs, as well as an informative post by Martin Fowler on Schemalessness.

Francois Zaninotto03/01/13
6506 views
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Comparing MongoDB New Aggregation Framework and SQL

MongoDB 2.1 introduced the aggregation framework, a faster alternative to Map/Reduce for common aggregation operations. If you took a look at the documentation and examples, you may have . . .

Amresh Singh03/01/13
2662 views
0 replies

Marrying JPA with Graph Databases

For a month or two, I have been exploring Neo4J, a graph database built for storing huge amount of data. Other popular graph database, that I will be dwelling into is InfiniteGraph from Objectivity.

Eric Gregory03/01/13
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0 replies

DZone Links You Don't Want To Miss (3/1/13)

Today, learn how a rural farming community in England took the internet into their own hands, explore the history of curly braces, and take a look at every website ever.

Andreas Kollegger02/28/13
2561 views
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Neo4j at Heroku Waza 2013

We are excited to be sponsoring Heroku’s Waza 2013. Michael Hunger, Pernilla Lindh and I will be at the Neo4j lounge with our amazing zen sand coffee table, along with showcasing the Waza-Twitter graph.

Santosh Kumar02/28/13
2191 views
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Parallelizing Work with Redis

Anyone who has heard of Redis has probably also heard of Resque, which is a lightweight queue'ing system.

Don Pinto02/28/13
1234 views
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A Couchbase Plugin for ElasticSearch

I’m happy to announce that we are extending the capabilities of Couchbase further and are releasing the Couchbase Plug-in for Elasticsearch.

Jessica Thornsby02/28/13
2562 views
0 replies

Non-Stop NameNode Removes Hadoop’s Single Point of Failure

Built on our Non-Stop patented technology, Hadoop’s NameNode is no longer a single point of failure, delivering immediate and automatic failover and recovery whenever a server goes offline . . .

Eric Genesky02/27/13
2197 views
0 replies

How to Think Non Relational

Here's a one-hour presentation on MongoDB with a focus on schema design.

Nathan Gurfinkel02/27/13
4454 views
8 replies

Java and MongoDB in PaaS

Short prequisites. I'm working in my spare time on personal project, for current easiness and future scalability I chose MongoDB for data, programming language is Java . . .

Mark Needham02/27/13
2304 views
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Neo4j/Cypher: Combining COUNT and COLLECT in One Query

As I continued playing around with football data, I wanted to write a cypher query against neo4j which would show me which teams had missed the most penalties this season and who missed them.

Eric Genesky02/27/13
2392 views
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A High Level Introduction to Graph Databases

Here's a 1/2 hour video from Neo4j that serves as an introduction to graph databases. Topics covered include an overview of NoSQL tchnologies . . .

Martin Fowler02/26/13
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NoSQL for NoDBA

In many organizations, it's expected that any persistent data will be stored in relational databases that are managed by a central database management group . . .