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Wojciech Kudla01/29/14
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How to Serialize an Array of Doubles to a Byte

Low latency systems require high performance message processing and passing. The technique presented in this article is a good example of how leveraging some aspects of the data benefits encoding in both latency and space complexity.

Tim Eisenhauer01/29/14
3598 views
0 replies

Problems with Free and Open Source Collaboration Platforms

Recently, one of my government clients decided to switch their public facing ASP.NET to Drupal (an open source solution), and they had an embarrassing hacking scenario. There are a number of disadvantages to open source systems that you should be aware of before making the switch.

Ayende Rahien01/24/14
9553 views
0 replies

Big Data Search, Part 4: The Index Format is Horrible

The author has finished his own Big Data Search exercise, and it's interesting to see just how far out there the code is. It isn't something that you can use for much except as a basis to see how badly you are doing. Let's start with the index format: A CSV file with the value and the position in the original file.

Alec Noller01/22/14
7951 views
1 replies

Dev of the Week: James Sugrue

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 James Sugrue, principal front-end architect at Avego and DZone zone leader.

Vlad Mihalcea01/20/14
9766 views
0 replies

A Beginner’s Guide to MongoDB Performance Turbocharging

This is the second part of our MongoDB time series tutorial, and this post will be dedicated to performance tuning. In my previous post, I introduced you into our virtual project requirements. In short, we have 50M time events, spanning from the 1st of January 2012 to the 1st of January 2013.

Alec Noller01/19/14
9605 views
0 replies

The Best of the Week (Jan. 10): NoSQL Zone

Make sure you didn't miss anything with this list of the Best of the Week in the NoSQL Zone. This week's best include a comparison of various NoSQL databases, a discussion of the myths surrounding the open source movement, a demonstration of MongoDB's real-life usage, and more.

Alec Noller01/19/14
6935 views
0 replies

The Best of the Week (Jan. 10): Big Data Zone

Make sure you didn't miss anything with this list of the Best of the Week in the Big Data Zone. This week's best include a tutorial on getting started with ElasticSearch, Hadoop as the central tool of Big Brother, and a how-to for splitting large XML files in Java.

Julian Exenberger01/16/14
15852 views
0 replies

Builder Pattern Using Java 8

A key feature that Groovy builders have is their hierarchical approach to building constructs. This allows the builders to neatly and safely create nested, tree-like constructs which can be used to model everything from UX form layouts to XML. We can model this approach succinctly using Java 8 lambda expressions.

Krishna Prasad01/16/14
7233 views
0 replies

Sharding, Scaling, Data Storage Methodologies, and More: Insights on Big Data

In this article, the author provides a variety of insights on Big Data, including explanations and comparisons of OLTP and OLAP, data sharding, MPP, vertical and horizontal scaling, CAP Theorem, databases such as Greenplum and Hbase, and a detailed table comparing data storage methodologies.

Mark Needham01/16/14
6129 views
0 replies

Neo4j: Modeling ‘Series’ of Events

One of the things the author never worked out how to model in his football graph is a series of matches that allow him to answer questions like the following: How many goals has Robin Van Persie scored in his last 10 matches in the Barclays Premier League? In this article, the author explores some options.

Alec Noller01/15/14
8648 views
0 replies

Hadoop: The NSA-Fueled Privacy Invasion Machine

Hadoop users, or anybody interested in Big Data, may be interested in this recent article from Salon about the nefarious uses of Hadoop. A significant portion of the article is focused on explaining Hadoop, but then there's more: Hadoop as the central tool of Big Brother.

Vlad Mihalcea01/14/14
14911 views
0 replies

MongoDB Time Series: Introducing the Aggregation Framework

In previous posts, the author talked about batch importing and the out-of-the-box MongoDB performance. Recently, though, MongoDB was awarded DBMS of the year, so he therefore decided to offer a more thorough analysis of its real-life usage.

Adam Fowler01/14/14
5058 views
0 replies

How to Interpret NoSQL Funding Rounds

It’s all very tempting to gloat about the amount of money your company has raised in a funding round. Many commentators use the size of an investment to determine the likely value of the company. The author believes that approach is too simplistic, though.

Alex Staveley01/13/14
7733 views
0 replies

Closures in Groovy

The simpliest explanation of a closure in Groovy is that it is anonymous function.

Alec Noller01/13/14
4345 views
0 replies

MongoDB: 5 Syntactic Weirdnesses to Keep in Mind

People like to complain about MongoDB. The debate gets so heated, though, that sometimes valid criticisms - and nothing is above criticism - are dismissed as bandwagon hatred. It's a problem that Slava Kim seems very aware of in this recent blog post on some of the syntactic weirdnesses of MongoDB.