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Alec Noller09/22/14
9197 views
1 replies

Introducing DZone's 2014 Guide to Big Data

DZone's 2014 Guide to Big Data was produced to help you discover emerging information about the Big Data landscape and learn about how the shifting needs of data scientists and developers are influencing new tools and technologies.

Gerry Claps09/22/14
2903 views
0 replies

Product Owners can DESTROY your Agile teams

Every Scrum team has a Product Owner, but not every Product Owner is being 'agile'. Here's 3 steps on how to get it right!

Benjamin Ball09/21/14
3748 views
0 replies

The Best of the Week (Sept 12): Cloud Zone

Make sure you didn't miss anything with this list of the Best of the Week in the Cloud Zone (Sept 5 to Sept 12). This week's topics include workflow automation, an OpenStack MySQL perspective, multi-tenant cloud platforms and virtualization, networking Docker containers, and scaling Azure sites.

Priya Darshini09/21/14
3395 views
0 replies

CRUD Using Spring MVC 4.0 RESTful Web Services and AngularJS

Based on the requests from many readers, I am now presenting an article on how to make CRUD operations using Spring MVC 4.0 RESTFul web services and AngularJS. I had already written few articles on Spring MVC 4.0 RESTFul Web Services in case you are new to this.

Madhuka Udantha09/20/14
2239 views
0 replies

Increasing MySQL Connection Count

A short tutorial on increasing the MySQL connection count.

Trevor Parsons09/19/14
3708 views
0 replies

How to Avoid the Big Data Black Hole

Data collection should be synthesized into meaningful events. Getting users addicted to a platform by the quality and frequency of decisions versus encouraging them to spin the wheel to see what happens and becoming a 5th limb.

Steve Hanov09/19/14
4242 views
1 replies

A Quick Measure of Sortedness

How do you measure the "sortedness" of a list? Here, I propose another measure for sortedness. The procedure is to sum the difference between the position of each element in the sorted list, x, and where it ends up in the unsorted list, f(x). We divide by the square of the length of the list and multiply by two, because this gives us a nice number between 0 and 1. Subtracting from 1 makes it range from 0, for completely unsorted, to 1, for completely sorted.

Aleksey Novik09/19/14
7421 views
17 replies

Solving ORM: Keep the O, Drop the R, No Need for the M

The ORM complexity problem has a simple, production-ready solution hiding in plain sight in the Java world.

Chris Travers09/19/14
2756 views
0 replies

Math and SQL Part 6: The Problem with NULLs

NULL handling is probably the most poorly thought-out feature of SQL and is inconsistent generally with the relational model. Worse, a clear mathematical approach to NULLs is impossible with SQL because too many different meanings are attached to the same value.

Peter Zaitsev09/19/14
1610 views
0 replies

MySQL 101: Monitor Disk I/O with pt-diskstats

In this post, I will share some examples about how to monitor and check to see if the IO subsystem is performing properly or if any disks are a limiting factor – all this by using the pt-diskstats tool.

Lisa Schultz09/19/14
3792 views
0 replies

NoSQL and NewSQL: A Primer

To fulfill the need for additional database processing speed and storage, the goal is to scale-out (add more commodity nodes to the system) rather than having to scale up (add more CPU or memory to each node). And to handle this need, two new kinds of scale-out databases have emerged: NoSQL and NewSQL. Let’s take a look at what sets them apart.

Jim Hirschauer09/19/14
3595 views
0 replies

Top 5 Mobile APM Myths: Myths 1 & 2

There is a lot of confusion in the market today. So in this blog post, I’d like to dispel some key myths around mobile apps. And how, with the right mAPM tool, you can nail your mobile app experience — both interactivity-wise and performance-wise — and thereby win the market.

Johanna Rothman09/19/14
2512 views
2 replies

Cost, Value & Investment: How Much Will This Project Cost? Part 2

Delivering working software builds trust. Trust obviates many needs for estimates. If your managers or customers have never had trust with a project or program team before, they will start asking for estimates. Your job is to deliver working software every day, so they stop asking.

Mark Needham09/19/14
4387 views
0 replies

R: Calculating rolling or moving averages

I’ve been playing around with some time series data in R and since there’s a bit of variation between consecutive points I wanted to smooth the data out by calculating the moving average.

Mark Needham09/19/14
3034 views
0 replies

R: ggplot – Plotting a single variable line chart

I’ve been learning how to do moving averages in R and having done that calculation I wanted to plot these variables on a line chart using ggplot.