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Creating A Custom Amazon Alexa Skill

With the explosion of internet of things (IoT), many companies are competing to create the best smart home ecosystem for consumers. Such big players include Samsung, Apple, Amazon, Insteon, Wink, Phillips, etc. Each offers a unique experience and claims to be the best in the business. In this blog we will discuss the Amazon Echo and its Alexa application. We will go ...

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Implications of the Presence of StringBuffer

When I am working on legacy code and run across instances of StringBuffer, I typically replace them with instances of StringBuilder. Although a performance advantage can be gained from this change, I often change it in places I know will have little noticeable effect in terms of performance. I feel it’s worth making the change for a variety of reasons ...

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Docker Remote API on Windows and OSX

There are multiple ways to monitor Docker containers. Docker CLI provides the docker container stats API that gives basic information about the running containers. Docker Remote API provides more detailed information about the containers. Staring with Docker 1.13, there is an experimental feature with a Prometheus endpoint cAdvisor is an open source tool that provides last container usage and performance characteristics. This data can be ...

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Team Size Matters, Reprise

Several years ago, I wrote a post for a different blog called “Why Team Size Matters.” That post is long gone. I explained that the number of communication paths in the team does not increase linearly as the team size increases;  team communication paths square when the team increases linearly. Here is the calculation where N is the number of people on ...

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What does a CTO do?

The last few years have been good to me, I’ve enjoyed giving advice to teams and companies and helping people get started with better ways of working, ways of working which usually go by the name of “agile” but the name is the least important thing. But… I’ve been questioning if I want to keep doing this. Like most of ...

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Use Cases for Java Enhanced Enums

In the message Enhanced Enums — use cases, Brian Goetz writes, “We’re hoping to get user feedback on the feature [Enhanced Enums] as it is now implemented.” He states the first purpose of his message, “To get things started, here are some typical use cases where generic enums might be useful.” The first of the two presented examples is refactoring ...

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A Java gist on zip and unzip

Compressing is one of the major actions that can be issued in our code when it comes to writing files. Thus I find a simple java snippet on zip and unzip essential and  has to be easily accessed. This gist is in plain java and stores two files in a zip. Once done the produced zip is open and its ...

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