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Enterprise Java

Performance Tuning of an Apache Kafka/Spark Streaming System

Real-world case study in the telecom industry Debugging a real-life distributed application can be a pretty daunting task. Most common Google searches don’t turn out to be very useful, at least at first. In this blog post, I will give a fairly detailed account of how we managed to accelerate by almost 10x an Apache Kafka/Spark Streaming/Apache Ignite application and ...

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Spring-Boot and Cache Abstraction with HazelCast

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Previously we got started with Spring Cache abstraction using the default Cache Manager that spring provides. Although this approach might suit our needs for simple applications, in case of complex problems we need to use different tools with more capabilities. Hazelcast is one of them. Hazelcast is hands down a great caching tool when it comes to a JVM based ...

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Spring Cloud Contracts and Spring Cloud Services on PCF

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We had a customer recently who were quite interested in the idea of using Spring Cloud Contract (SCC) in order to prevent API ‘drift’ between microservices teams where individual development teams look after the individual API’s that form part of an enterprise application. Spring Cloud Contract is an implementation of the ‘Consumer Driven Contracts‘ concept for the Spring platform. From the ...

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Develop A Microservice with Forge, WildFly Swarm and Arquillian

In this post we are going to see how to develop a microservice using WildFly Swarm and Forge and testing it with Arquillian and Rest Assured. WildFly Swarm offers an innovative approach to packaging and running Java EE applications by packaging them with just enough of the server runtime to “java -jar” your application. JBoss Forge is a software development ...

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Better Complex Event Processing at Scale Using a Microservices-based Streaming Architecture (Part 1)

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A microservice-based streaming architecture combined with an open source rule engine makes real-time business rules easy This post is intended as a detailed account of a project I have made to integrate an OSS business rules engine with a modern stream messaging system in the Kafka style. The goal of the project, better known as Complex Event Processing (CEP), is ...

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Spring boot and Cache Abstraction

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Caching is a major ingredient of most applications, and as long as we try to avoid disk access it will stay strong. Spring has great support for caching with a wide range of configurations. You can start as simple as you want and progress to something much more customizable. This would be an example with the simplest form of caching ...

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DMN runtime example with Drools

As announced last year, Drools 7.0 will have full runtime support for DMN models at compliance level 3. The runtime implementation is, at the time of this blog post, feature complete and the team now is working on nice to have improvements, bug fixes and user friendliness. Unfortunately, we will not have full authoring capabilities in time for the 7.0 release, but ...

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3 Steps to Cloud Operations Happiness with CloudForms

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There areThis week it was announced that the newest addition to the Cloud Suite management layer, CloudForms 4.2, was available for all to enjoy. many cool and new things to get excited about with over 1800 improvements added to the product. CloudForms is the Cloud management platform for the Cloud Suite product, providing you with the ability to deploy it federated across ...

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[MEGA DEAL] Big Data Mastery with Hadoop Bundle (89% off)

Tame Massive Data Sets with 44 Hours of Extensive Hadoop Training Hey fellow geeks, This week, on our JCG Deals store, we have an extreme offer. We are offering the Big Data Mastery with Hadoop Bundle for only $49 instead of the original price of $453, yeap that is a massive 89% off. Taming Big Data with MapReduce & Hadoop ...

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Getting Started with MQTT and Java

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MQTT (MQ Telemetry Transport) is a lightweight publish/subscribe messaging protocol. MQTT is used a lot in the Internet of Things applications, since it has been designed to run on remote locations with system with small footprint. The MQTT 3.1 is an OASIS standard, and you can find all the information at http://mqtt.org/ This article will guide you into the various ...

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