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George Dinwiddie02/06/14
8938 views
0 replies

How easy is it for your programmers to fix problems?

A programmer, writing some new code, looks into some existing code that she needs to use. Something doesn’t look quite right. In fact, there’s a bug. Whether no one’s triggered it, or they have but their complaints haven’t reached anyone who will do something about it, is hard to say. Can she fix this code now and keep working? Or does something prevent that?

Chris Chang02/06/14
9146 views
0 replies

Managing Disk Space in MongoDB

In the author's previous post on MongoDB storage structure and dbStats metrics, he covered how MongoDB stores data and the differences between the dataSize, storageSize and fileSize metrics. He can now apply this knowledge to evaluate strategies for re-using MongoDB disk space.

Mark Needham02/06/14
4258 views
0 replies

Neo4j HA: Dealing with TransactionFailureException

As the author mentioned in his previous post, he has been spending quite a bit of time working with Neo4j HA and recently came across the Neo4j HA: org.neo4j.graphdb.TransactionFailureException exception in data/graph.db/messages.log.

Rishav Rohit02/06/14
15220 views
2 replies

Introduction To Hive's Partitioning

In Hive’s implementation of partitioning, data within a table is split across multiple partitions. Each partition corresponds to a particular value(s) of partition column(s) and is stored as a sub-directory within the table’s directory on HDFS. Today we are going to see how we can load a CSV file to a partitioned table.

Ayende Rahien02/06/14
3420 views
0 replies

The RavenDB Conference: April 7 - 11

The author is very proud to announce that we are having the first RavenDB conference from April 7 – 11 in Raleigh, NC. You can register for the conference right now and please do so, because we have limited number of places.

Alec Noller02/05/14
13617 views
0 replies

Dev of the Week: Rafael Winterhalter

Every week here and in our newsletter, we feature a new developer/blogger from the DZone community to catch up and find out what he or she is working on now and what's coming next. This week we're talking to Rafael Winterhalter, Java enthusiast and software engineer at Kantega in Oslo, Norway.

Mike Bushong02/05/14
8564 views
2 replies

Open Source as the Future of IT

Open source is playing an increasingly important role in IT infrastructure generally. But is open source a natural evolutionary path for all IT disciplines, or are there certain characteristics that make some areas more ripe for open source than others?

Ayende Rahien02/05/14
6859 views
0 replies

Big Data Search, Part 6: Sorting Randomness

As it turns out, doing work on big data sets is quite hard. To start with, you need to get the data, and it is… well, big. So that takes a while. Instead, the author decided to test my theory on the following scenario. Given 4 GB of random numbers, let us find how many times we have the number 1.

Mark Needham02/05/14
5900 views
0 replies

Neo4j HA: Election Could Not Pick a Winner

Recently the author has been spending a reasonable chunk of his time helping people get up and running with their Neo4j High Availability cluster, and there’s sometimes confusion around how it should be configured. This article addresses that confusion.

Matt Lacey02/05/14
9086 views
1 replies

Beware of Upcoming Law Changes Regarding In-App Purchases

If you weren't aware, new consumer trading laws concerning online and app-based games come into effect soon. These changes are intended to protect consumers from potentially misleading, commercially aggressive or otherwise unfair practices.

Mike Cottmeyer02/05/14
8420 views
0 replies

The Top Five Agile Methodology PPTs

Are you looking for the best Agile Methodology PPTs? We have scoured the web to pull together a list of the greatest Agile Methodology PPTs we could find. We hope you find these helpfully whether you are just starting your Agile journey or are well on your way and just looking for ways to improve.

Dharshan Rangegowda02/04/14
7722 views
1 replies

NoSQL trends: MongoDB, Cassandra, Couch & Riak

NoSQL has been a pretty hot topic over the last few years. There are a number of contenders in the NoSQL world - MongoDB, Cassandra, Couch, Riak, etc. In this article, you'll find a visualization of how they're trending.

Chen Harel02/04/14
19231 views
2 replies

How to Write the Perfect Stack Overflow Question (After Analyzing 10,000)

This article is the result of researching over 10,000 Stack Overflow questions. It summarizes how you need to phrase and write your question in order to get better and faster answers.

Knut W. Hansson02/03/14
8142 views
2 replies

Code Puzzler: Favorite Seats

Given an array of n rows numbered 0 to n-1, each of m seats 0 to m-1, where the cells have values True (meaning the seat is available) or False (meaning the seat is taken). A customer states that his favorite seat is at row x and seat y on that row.

Jakub Holý02/03/14
9228 views
0 replies

A Secret Weapon Against Technical Debt

Technical debt is not the only monster we have to fight – it has a hidden evil twin, as pointed out by Niklas Björnerstedt: Competence Debt. There is an often neglected tool at our fingertips that might help us fight competence debt. Its name is – behold – JavaDoc