By Christopher W. H. Davis, Continuous Improvement
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The book Continuous Improvement walks the reader through the collection and analysis of data to provide metrics that guide the continuous improvement of agile teams. Each chapter ends in a case study outlining the application of this technique with specific...
on Feb 23, 2015
By Konstantinos Kapelonis, Java Testing with Spock
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In the Java world, there has been so far only one solution for unit tests. The venerable JUnit framework is the obvious choice and has become almost synonymous with unit testing. JUnit has the largest mind share among developers who are entrenched in their...
on Feb 19, 2015
By Debasish Ghosh, Functional and Reactive Domain Modeling
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One of the most important aspects of domain model API design is the specification of the API itself. The specification should be concise, clear and easily understandable by the client. While using object oriented techniques we use...
on Jan 26, 2015
By Roland Kuhn and Jamie Allen, Reactive Design Patterns
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Computers are meant to perform repetitive tasks for us, quickly and without human errors. But sometimes programs are written without regard to scalability and when they get popular, they’re not able to keep up with the usage.
Twitter, for example, was simply...
on Dec 3, 2014
Around 3 months ago, I have posted one article explaining our approach and consideration to build Cloud Application. From this article, I will gradually share our practical design to solve this challenge.
As mentioned before, our final goal is to build a Saas big data analysis application, which will deployed in AWS servers. In order to fulfill this goal, we need to build distributed crawling,...
on Aug 28, 2014
When people ask me what am I doing, my immediate response is IT. Even though, the answer is not very specific, it is the easiest to understand and it still helps to describe what we are doing. In fact, it doesn't matter what programming languages we use, our responsibility is to build the information system, which deliver information to end-user. Therefore, we should value information more than...
on Aug 2, 2014
JavaLand 2015 Early Adopter's Area
With only 25 business days to go until JavaLand 2015, now's a good time to share the plans for the Early Adopter's area and Hackergarten. As at many other Java community conferences, this is a space where anyone can visit and meet with leaders of different parts of the Java ecosystem to see first hand what's new in their own little patch of the Java world. The...
on Feb 16, 2015
JavaLand 2015 Conference Picks
With only 44 business days to go until JavaLand 2015, I’d like to share my conference picks. I’m including my sessions for completeness, and naturally I recommend you attend them, but I’ll also include an alternate that I’d attend if I wasn’t speaking at that time.
Tuesday, 24 March 2015
0900, Wintergarden, Welcome Keynote: 20 Years...
on Jan 16, 2015
With all of my formal JavaOne conference obligations satisfied, day four was dedicated to listening. Another day, another hotel. The community keynote had a little bit of everything and was in the San Francisco Marriott, bringing to four the total number of separate buildings I had to visit for JavaOne. The complete keynote is available at Oracle. The room was full, and Intel VP Michael...
on Oct 28, 2014
The flow of my JavaOne 2014 experience had each day getting progressively less demanding. Day zero was an eight hour class. Day one was booth duty, a session , EG meeting, and a BOF. By day two, Tuesday, my involvement had reduced to presenting one session, participating in the Hackergarten and meet the experts areas, and a panel discussion.
The day began by co-presenting a session with Heather...
on Oct 9, 2014
Update 1: added content about Greg Wilkin's Async IO session.
The first real day of the conference began with session one of two obligatory Oracle booth duty assignments. Our booth had two foci: showing off Java EE 7 using the Cargo Tracker Blueprints Application and providing insight into our plans for Java EE 8. To spice things up a bit and perhaps draw some people in, I brought along my kit-...
on Oct 7, 2014
Web Development Tools
Bunyan is a NodeJS library that rethinks logging in some really useful ways. I wrote a Java port you can use in your applications.
In particular, with Bunyan, logs are JSON - and Bunyan comes with a great filtering and analysis tool.
The Java port uses some innovative techniques to make logging simple and foolproof - in particular, a use of AutoCloseable to make a logging code simple and...
on Jan 18, 2015
Validating Oracle Java Cloud Service HA
One of my favorite applications from my Sun Java System Application Server days was the Cluster JSP Sample Application. In a cluster configuration fronted by a load balancer, this simple JSP provides a nice summary of which cluster node handled the request as well as the ability to test session failover. Therefore, why not try it on the Oracle Java Cloud...
on Jan 7, 2015
JavaLand Training Day Teaser
With only 61 days to go until JavaLand 2015, it's high time for a preview of the Training Day session I am pleased to offer with my friend Oliver Szymanksi. Briefly, this session is a full day treatment of the parts of Java EE 7 that intersect with the world of HTML5 web development.
While the session is an update of the successful class we offered at JavaOne San...
on Dec 26, 2014
By Elijah Meeks for D3 in Action
One of the most popular information visualization charts in D3 is also one of the most maligned: the word cloud. Also known as a tag cloud, the word cloud uses text and text size to represent the importance or frequency of words. Figure 1 shows a thumbnail gallery of 15 word clouds derived from text in a species biodiversity database. Oftentimes, word clouds...
on Nov 10, 2014
By Avi Pfeffer for Practical Probablistic Programming
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Probabilistic programming is a way to create systems that help us make decisions in the face of uncertainty. Probabilistic reasoning combines our knowledge of a situation with the laws of probability to determine those unobserved factors that are critical to...
on Nov 10, 2014
Day three was definitely the high point of the conference for me. As anyone who has spoken at tech conferences knows, the point in time when all of one's sessions have been given is the turning point between tempered enjoyment and pure enjoyment of the conference. I was blessed with the scheduling this year; I was all done after Wednesday. This put me in a great frame of mind to enjoy the...
on Oct 17, 2014
Why you should small libraries that do one thing well, over on my real blog at timboudreau.com
A response to Eran Hammer's The Fallacy of Tiny Modules.
on Aug 24, 2014
Once upon a time, I published one article explaining the principle to build Stateless Session. Coincidentally, we are working on the same task again, but this time, for a multi-tenant application. This time, instead of building the authentication mechanism ourselves, we integrate our solution into Spring Security framework.
This article will explain our approach and implementation.
on Sep 7, 2014
The Acteur async web framework has grown some new features over the last year. A really, really simple way to write small, scalable REST servers.
on Aug 24, 2014