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Alec Noller01/03/14
6993 views
0 replies

Why Cassandra is No Good for ETL

According to this recent blog post, Cassandra is no good for ETL. That's not to say that Cassandra is not good at all - the author is a current Cassandra user and has good to say about it - but the author takes issue with the perception of Cassandra as a do-all replacement for something like MySQL.

Ayende Rahien01/02/14
6266 views
0 replies

Transaction merging, locks, background threads and performance

This code is responsible for merging concurrent transactions. It operates using a mutex and conditional variables. And the idea really impressed me when I first saw it.

Ayende Rahien01/02/14
4428 views
0 replies

Machine Bias in Profiler-Based Optimization

Take a look at the following profilers results. They both showcase pretty much the same codebase, without any major changes in between. However, they have been both run on different machines, and they result in very different performance optimization paths.

Mike Cottmeyer01/02/14
8196 views
0 replies

How to Achieve Your New Year’s Resolutions with Agile

We Agile practitioners are probably less thrilled by these New Year’s traditions. We have been desensitized by countless iterations kicking off with commitments and coming to a close with retrospectives. Our cynicism toward a Waterfall approach most likely makes most of us jaded about these end-of-the-year festivities. Or maybe not?

Jeremy Stanton01/02/14
22974 views
5 replies

QA is Dead. Long live QA!

I was recently asked for advice on how to go from two week sprints to one. The conversation was one I've had several times. Client: "We are a scrum shop that has two week sprints. We'd like to release faster. Any suggestions?"

Mitch Pronschinske01/02/14
6930 views
0 replies

Can SDN Kill the CLI?

Since software defined networking is mainly controlled through applications instead of ports, that's where industry-watchers expect network engineers to be doing more of their interaction with the network in the future, not through the command-line interface.

Mitch Pronschinske01/02/14
9989 views
0 replies

OpenShift and the Argument for Cartridges

Cartridges are extremely convenient because they handle the database drivers for you. They also wire together other components and implement auto-scaling and other functionality.

Mark Needham01/02/14
4787 views
0 replies

Neo4j and Cypher: Using MERGE with Schema Indexes/Constraints

Neo4j’s powerful graph database can be used for analytics, recommendation engines, social graphs and many more applications. In the following example we demonstrate in a few steps how you can load Neo4j from your legacy relations SQL source.

John Cook01/01/14
10335 views
1 replies

Know Whether to Delegate

Managing energy is more important than managing time. Energy is what gets things done, and time is only a crude surrogate for energy. Instead of only looking at what you could earn per hour versus what you could hire someone else for per hour, consider the energy it would take you to do something versus the energy it would free to delegate it.

Alec Noller01/01/14
6821 views
0 replies

DRM and W3C Standards: Will the Web Stay Open?

A recent article from Danny O'Brien at the Electronic Frontier Foundation reported that the proposed Encrypted Media Extension (EME), which focuses on the protection of video content, could potentially be incorporated into W3C's HTML5.1 standard.

John Cook01/01/14
6378 views
0 replies

Sensitive Dependence on Initial Conditions

The following problem illustrates how the smallest changes to a problem can have large consequences. As explained at the end of the post, this problem is a little artificial, but it illustrates difficulties that come up in realistic problems.

Rob Galanakis12/31/13
12873 views
3 replies

TDD via Tic-Tac-Toe

I’ve tried out lots of different subject matter for teaching TDD, but my favorite has been Tic-Tac-Toe (or whatever your regional variation of it is). It has these benefits:

Chase Seibert12/31/13
26037 views
10 replies

Development on a Mac versus Linux

I love the Mac computing experience. Even though I use a Mac as my home laptop, I prefer a Linux machine for work. Here are the key differences between developing on a Mac and on Linux.

Vlad Mihalcea12/31/13
7240 views
2 replies

NoSQL is Not Just About Big Data

After publishing a small experiment with MongoDB, the author was challenged by the JOOQ team to match his results against Oracle. He will explore the specifics of that challenge in a later post, and in this one, he discusses a number of Small Data use-cases in which MongoDB was the right tool for the job.

Alec Noller12/31/13
9145 views
1 replies

Are You Really a Data Scientist?

According to this recent post, you're not a data scientist just because you work with Hadoop a bit, and know some Python, and have some chops when it comes to databases. According to the author, it takes more than that, and in this article, he provides some resources to help you get there.