Do you want to know how to develop your skillset to become a Java Rockstar?

Subscribe to our newsletter to start Rocking right now!

To get you started we give you our best selling eBooks for FREE!

1. JPA Mini Book

2. JVM Troubleshooting Guide

3. JUnit Tutorial for Unit Testing

4. Java Annotations Tutorial

5. Java Interview Questions

and many more ....


Using the esp8266 as host for I2C sensors


For my outdoor sensors I used an RaspberryPi with BMP180 + TSL2561 connected via I2C transferring the sensor data as MQTT messages. During an IoT Meetup Session at codecentric office in Frankfurt we discussed the usage of an esp8266 and I was thrilled to get one and play with it. It turns out very quickly that the esp8266 is a really great ...

Read More »

Spring Cloud Sidecar


I have an application deployed to a NetflixOSS based cloud which has a structure along these lines: Essentially a service which persists information to a Cassandra cluster. All the applications are registered to Eureka – so in this instance the service as well as the Cassandra nodes are registered with Eureka, further the service connects to the Cassandra cluster by ...

Read More »

Building A Chat App With Codename One Part 6 – Codename One


This will be the last installment of this tutorial which was pretty complete in the previous section already. We might have additional installments mostly for covering enhancements such as “invite a friend” and other similar capabilites but this is probably as good a place as any to finish the app and let you try it live. Native Push Up until ...

Read More »

Benchmarking Aurora vs MySQL: Is Amazon’s New DB Really 5x Faster?


Amazon Aurora: The next generation of hosted database services put to the test In this post we’re taking a closer look at Amazon Aurora to see how it fares against MySQL and if it delivers on the promise of a 5x performance boost. Recently reaching general availability, Aurora is Amazon’s home grown MySQL compatible database. Currently available on three AWS regions ...

Read More »

A look on CDI 2.0 EDR1


CDI is one of the best additions to Java EE of the recent. This opinion is widely shared amongst users and integrators. CDI 1.2, the current version, was released in April, 2014. Now in mid-2015, we face the early draft review of the CDI 2.0 spec. CDI 2.0 will run on Java 8 and higher. The final release is scheduled ...

Read More »

The Full Stack Developer


I read The full stack developer is a myth story written by Scott Hadfield the other day. Once I got through the post, I realized a couple of things. The first major point is, there’s no uniform understanding what full stack developer means. More issues are the views of the commenters to the article and the opinion of companies mentioned ...

Read More »

Java 8 Lambda Expression for Design Patterns – Command Design Pattern


In this blog I would illustrate implementing the command pattern in functional programming style using Java 8 Lambda expressions. The intent of command pattern is to encapsulate a request as an object, thereby parameterizing clients with different requests, queue or log requests, and support corresponding operations. The command pattern is a way of writing generic code that sequences and executes ...

Read More »

Self-organizing, self-directing, self-managing and authority


Quick as a flash Eben Halford on Twitter pointed out the mistake with my last blog (Question for self-organizing teams). I was mixing up self-organizing teams with self-directing teams. Well maybe I was… much of my post still stands either way, and as Eben himself pointed out, we might be trying to split a hair here. Frankly, I suspect many ...

Read More »

Microservices in a Nutshell


At the onset, “Microservices” sounds like yet another term on the long list of software architecture styles. Many experts consider it as lightweight or fine-grained SOA. Though it is not entirely a new idea, Microservices seem to have peaked in popularity in recent years, what with numerous blogs, articles and conferences evangelizing the benefits of building software systems in this ...

Read More »

Architect or Architect?


I recently discovered that there are two very different types of people in large companies, who (at least in case of my customer) both claim to be “architects”. The one type is what I expect when I talk about architects. It is also what I mean when I claim to be an architect: Someone who helps a project to avoid ...

Read More »
Want to take your Java Skills to the next level?
Grab our programming books for FREE!
  • Save time by leveraging our field-tested solutions to common problems.
  • The books cover a wide range of topics, from JPA and JUnit, to JMeter and Android.
  • Each book comes as a standalone guide (with source code provided), so that you use it as reference.
Last Step ...

Where should we send the free eBooks?

Good Work!
To download the books, please verify your email address by following the instructions found on the email we just sent you.