NoSQL Zone is brought to you in partnership with:
  • submit to reddit
Francesca Krihely08/15/14
0 replies

MongoDB Security, Part 1: Design and Configuration

In a short series of blog posts I will attempt to explain the philosophy and design of the security model of MongoDB. The first post covers the basics of securing a MongoDB server and application and gives an overview of the options available.

Don Pinto08/15/14
0 replies

Couchbase Java SDK 2.0.0 Developer Preview 3

On behalf of the whole SDK team, I'm happy to announce the third developer preview of the Java/JVM SDK release train nicknamed Armstrong. It contains both the JVM core package "core-io" 0.3 as well as the Java SDK 2.0 developer preview 3.

Chris Chang08/14/14
0 replies

Easily Find & Kill MongoDB Operations from MongoLab’s UI

A few months ago, we wrote a blog post on finding and terminating long-running operations in MongoDB. To help make it even easier for MongoLab users* to quickly identify the cause behind database unresponsiveness, we’ve integrated the currentOp() and killOp() methods into our management portal.

Anders Karlsson08/14/14
0 replies

What is HandlerSocket? And Why Would You Use It? Part 1

HandlerSocket is included with MariaDB and acts like a simple NoSQL interface to InnoDB, XtraDB and Spider, and I will describe it a bit more in this and a few upcoming blogs.

Francesca Krihely08/13/14
0 replies

6 Rules of Thumb for MongoDB Schema Design: Part 3

This is our final stop in this tour of modeling One-to-N relationships in MongoDB. In the first post, I covered the three basic ways to model a One-to-N relationship. Last time, I covered some extensions to those basics: two-way referencing and denormalization.

Nikhil Kuriakose08/13/14
0 replies

Navigating XML using Cypher

Cypher is a neat way to manipulate a Neo4j database. It would be equally amazing if the Xml graph could be queried with Cypher as well.

Andreas Kollegger08/12/14
0 replies

From the Neo4j Community: Graph Visualizations

A few weeks ago, Neo4j launched our #ShowMeYourGraph twitter contest in preparation for GraphConnect 2014 SF. In celebration of this, we thought we’d highlight some Graph Visualizations our community has produced. Take a look and get inspired!

Zardosht Kasheff08/12/14
0 replies

Explaining Ark Part 4: Fixing Majority Write Concern

This is the fourth post in a series of posts that explains Ark, a consensus algorithm we’ve developed for TokuMX and MongoDB to fix known issues in elections and failover. In this post, I describe how Ark fixes the existing problems.

Francesca Krihely08/11/14
0 replies

6 Rules of Thumb for MongoDB Schema Design: Part 2

Last time I covered the three basic schema designs: embedding, child-referencing, and parent-referencing. With these basic techniques under our belt, I can move on to covering more sophisticated schema designs, involving two-way referencing and denormalization.

Trisha Gee08/11/14
0 replies

Getting Started with MongoDB and Java: Part I

For new users, it’s important to provide an overview of how to work with the MongoDB Java driver and how to use MongoDB as a Java developer.

Itamar Haber08/11/14
0 replies

Top Redis Headaches for DevOps: Replication Timeouts

The next headache on our list will carry on with the topic of master-slave replication. In particular, we will look a bit deeper at the length of time needed to complete the process as well as some configuration issues that can cause major inconveniences.

Alec Noller08/10/14
0 replies

The Best of the Week (Aug. 1): NoSQL Zone

Make sure you didn't miss anything with this list of the Best of the Week in the NoSQL Zone (August 1 to 7). This week's best include how to develop robust and scalable transactions across docs in MongoDB, how to use MongoDB with Go and mgo, the top NoSQL databases according to GitHub stars, and more.

Ajitesh Kumar08/08/14
0 replies

MongoDB Commands & Concepts: Rookie's Quick Reference

This article presents some of the basic concepts and commands which could prove useful for rookies starting with MongoDB.

Don Pinto08/08/14
0 replies

Couchbase Node.JS SDK 2.0.0-beta Released!

We’ve just released a new version of our Node.js SDK, now in Beta. This reflects a big change from our previous SDK releases, including a new API which should be far easier to get started with and use, better documentation, and numerous performance enhancements through our related project, libcouchbase.

Francesca Krihely08/07/14
0 replies

6 Rules of Thumb for MongoDB Schema Design: Part 1

“I have lots of experience with SQL, but I’m just a beginner with MongoDB. How do I model a one-to-N relationship?” This is one of the more common questions I get from users attending MongoDB office hours. In this first part, I’ll talk about the three basic ways to model One-to-N relationships.

Ayende Rahien08/07/14
0 replies

Production Analysis and Troubleshooting with RavenDB

We got tired of sending over “give me the output of the following endpoints” deal. We wanted a better story, something that would be easier and more convenient all around. So we sat down and thought about this, and came up with the idea of the Debug Info Package.

Antoine Girbal08/06/14
0 replies

How to Implement Robust and Scalable Transactions Across Documents with MongoDB

MongoDB supports ACID at a single document level. This technique actually solves a number of transactional issues for one-to-one and some one-to-many relationships. But for other cases where data must be split, how can you deal with it?

Itamar Haber08/05/14
0 replies

Top Redis Headaches for DevOps: Replication Buffer

This series of installments will highlight some of the most irritating issues that come up when using Redis, along with tips on how to solve them. They are based on our real-life experience of running thousands of Redis database instances.

Zardosht Kasheff08/04/14
0 replies

Explaining Ark Part 3: Why Data May Be Lost on a Failover

In this post, I assume the reader is familiar with the first two posts and discuss why data that has been successfully acknowledged with majority write concern may be lost in a failover.

Steve Francia08/01/14
0 replies

Using MongoDB with Go and mgo

This presentation will give developers an introduction and practical experience of using MongoDB with the Go language. MongoDB Chief Developer Advocate & Gopher Steve Francia presents plainly what you need to know about using MongoDB with Go.

Alec Noller08/01/14
0 replies

Awesome GitHub: The Top NoSQL Databases According to GitHub Stars

If you're curious about who comes out on top when it comes to NoSQL databases, there are a lot of differing opinions and a lot of places to look. You can check out DB-Engines or Kristof Kovacs' list, or you can just look at GitHub. That's what Memect's Awesome GitHub does.

Nati Shalom07/31/14
0 replies

How to Add Real Distributed Transactions to MongoDB

One thing (or maybe two) that you keep hearing from the MongoDB community (and probably also applies to Cassandra and HBase) is the lack of transactions support. For the record, MongoDB does provide some support for transactions, but to have real distributed transaction support in Mongo is not an easy task.

Julien Sebrien07/30/14
0 replies

Spark/Cassandra Stack: Perform RDD Operations Using Datastax Connector

In this article, we will use the brand new Datastax Cassandra/Spark connector to be able to load data from a Cassandra table and run RDD operations on this data using Spark.

Alec Noller07/30/14
0 replies

NoSQL's Oversaturation Problem

It's a familiar story at this point - trying out NoSQL, then moving back to relational databases - and the response is generally consistent as well: NoSQL will only be useful if you understand your problems and choose the appropriate solution. But with so many solutions cluttering the market, how can you choose?

Mark Needham07/29/14
0 replies

Neo4j 2.1.2: Finding Where I Am in a Linked List

I was recently asked how to calculate the position of a node in a linked list and realized that as the list increases in size, this is one of the occasions when we should write an unmanaged extension, rather than using Cypher.