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Adding microbenchmarking to your build process

Introduction As an industry, we are adopting higher transparent and more predictable build processes in order to reduce the risks in building software.  One of the core principles of Continuous Delivery is to gather feedback via Feedback Loops.  At Dev9, we have adopted a ” first to know” principle that aligns with the CD principle which means that we (the dev team) ...

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Practical Reactor operations – Retrieve Details of a Cloud Foundry Application

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CF-Java-Client is a library which enables programatic access to a Cloud Foundry Cloud Controller API. It is built on top of Project Reactor, an implementation of Reactive Streams specification and it is a fun exercise using this library to do something practical in a Cloud Foundry environment. Consider a sample use case – Given an application id I need to find a little more ...

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Multilayer Perceptron Predictions Exposed

Learning Deep Learning Currently, I learn Deep Learning fundamentals with the help of Jason Brownlee’s Deep Learning with Python book. It provides good practical coverage of building various types of deep learning networks such CNN, RNN etc. Running each model in the book is accompanied with providing various metrics, for instance, accuracy of the model. But accuracy does not provide a real ...

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Serverless FaaS with AWS Lambda and Java

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What is Serverless Architecture? Serverless architecture runs custom code in ephemeral containers that are fully managed by a 3rd party. The custom code is typically a small part of a complete application. It is also called as function. This gives another name for serverless architecture as Function as a Service (FaaS). The container is ephemeral because it may only last for one invocation. The container may ...

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Writing RESTful Service using Node, Express and MongoDB

Looking at the popularity of Node.js, I thought of learning and creating a rest api that should create, delete and get employees from database and fortunately I did it. With this post, I will try to replicate the steps I followed while writing it along with references. Assuming Node.js is already installed in our system, let’s start creating nodejs-rest-api, following ...

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MapStruct : Transferring data from one bean to another

Converting data from one form to another is a highly utilized concept in IT industry. MapStruct allows annotation based bean conversion by generating mapper implementation at compile time. This makes sure there is no performance overhead at run-time. What is MapStruct? MapStruct is a code generator that greatly simplifies the implementation of mappings between Java bean types based on a ...

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Anemic Objects Are OK

I thought for a while that object-oriented purism has died off. But it hasn’t – every now and then there’s an article that tries to tell us how evil setters and getters are, how bad (Java) annotations are, and how horrible and anti-object-oriented the anemic data model is (when functionality-only services act upon data-only objects) and eventually how dependency injection ...

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Work started on Apache Camel Intellij IDEA plugin

Just because its Christmas does not mean the Camel stands still. On the even of the 23rd I took the evening to do a bit of research and start hack on a little prototype for an Apache Camel plugin for IDEA. Its something that has been on my radar for a longer time. The reason is that Apache Camel provides a ...

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AWS IoT Button, Lambda and Couchbase

Getting Started with Serverless FaaS and AWS Lambda shows how to use a simple Java function to store a JSON document to Couchbase using AWS Lambda. This blog builds upon that and shows how an AWS IoT Button can be used as a trigger for that Lambda function. By end of this blog, you’ll learn: How to configure AWS IoT Button Use IoT Button as trigger ...

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