Tips and Tricks

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Changing Locale Based on Domain

Happy New Year to everybody!!. With Tapestry one of the advantages is that you can override almost everything but then there are always some parts which are...

0 replies - 1057 views - 01/11/13 by Taha Siddiqi in Articles

Debugging with VisualVM and JMX

 This is a high-level overview of how Instant Technologies is using VisualVM and JMX to help optimize a Java applications.

0 replies - 6021 views - 01/10/13 by Allen Coin in Articles

Scala Function Literals

Functions are an important part of the Scala language. Scala Functions can have a parameter list and can also have a return type. So the first confusing...

9 replies - 2562 views - 01/10/13 by Alex Staveley in Articles

Finding Pixels with No Variance Using R

I’ve written previously about our attempts at the Kaggle Digit Recogniser problem and our approach so far...

0 replies - 1682 views - 01/10/13 by Mark Needham in Articles

Top 10 Pops and Drops with Splunk - Part 1

In real-time operational contexts, it’s important to monitor system metrics for major swings in value. Such swings, whether upward (“pops”) or downward...

0 replies - 2133 views - 01/10/13 by Willie Wheeler in Articles

Bash: Parse Options And Non-Options With Getopts

Parsing script or function options and non-option arguments is easy in Bash with getopts but there are some catches, such as the need to reset...

0 replies - 2224 views - 01/10/13 by Jakub Holý in Articles

Bash Magic: List Hive Table Sizes in GB

To list the sizes of Hive tables in Hadoop in GBs: sudo -u hdfs hadoop fs -du /user/hive/warehouse/ | awk '/^[0-9]+/ { print int($1/(1024**3)) "...

0 replies - 1993 views - 01/10/13 by Jakub Holý in Articles

Enabling CLIENT-CERT based authorization on Tomcat: Part 1

In continuation with my earlier blog on Enabling SSL on Tomcat, in this blog I will go to next step and enable CLIENT-CERT based authorization on Tomcat. Again...

0 replies - 910 views - 01/10/13 by Krishna Prasad in Articles

Enabling CLIENT-CERT based authorization on Tomcat – Part 2

In continuation of my earlier blogs Enabling CLIENT-CERT based authorization on Tomcat and Enabling SSL in Tomcat, in this blog I will demonstrate,...

0 replies - 801 views - 01/10/13 by Krishna Prasad in Articles

Averting Tragedy on the Architectural Commons

Averting Tragedy on the Architectural Commons from JavaZone on Vimeo. Much has been made of the need to establish software architectures to provide the firm...

0 replies - 872 views - 01/10/13 by Mitch Pronschinske in Articles

Design For Replaceability - Architecture For An Agile Lifestyle

Design For Replaceability - Architecture For An Agile Lifestyle from JavaZone on Vimeo. The most important question to be asked when developing a new...

0 replies - 1153 views - 01/10/13 by Mitch Pronschinske in Articles

No Takesies-Backsies: VMware Lays Claim to Vert.x

In an announcement yesterday on the Vert.x Google Group, project leader Tim Fox announced his bizarre experience with his former employer VMware's legal team:...

8 replies - 5090 views - 01/09/13 by Allen Coin in Articles

How to Create an Azure Cloud Service

 I’ve been investigating setting up a Worker Role to do something similar to a Windows Service and it seems that the Worker Role is best suited for...

0 replies - 1805 views - 01/09/13 by Phillip Haydon in Articles

Sonnet Primes in Python

A while back I wrote about sonnet primes, primes of the form ababcdcdefefgg where the letters a through g represent digits and a is...

0 replies - 1649 views - 01/09/13 by John Cook in Articles

A Trip to the Math Museum

This Saturday, we had two interesting museum experiences, with the kids. Kids are 10, 7 (and a half as she keeps saying) and 2 (and a half, too). In the...

0 replies - 1595 views - 01/09/13 by Arthur Charpentier in Articles