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Continuous Delivery of Fusion Middleware applications with FlexDeploy

Any IT organization sooner or later has to deal with such thing as Continuous Delivery (CD). They realize that there are various environments such as development, QA, support, UAT, production, etc. and there are a number of different systems working in those environments. At some point managing all that stuff manually becomes just impossible and should be automated. There is ...

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Couchbase Java SDK with Rx-Java

A neat thing about CouchbaseJava SDK  is that it is built on top of the excellent Rx-Java library, this enables a reactive way to interact with a Couchbase server instance which is very intuitive once you get the hang of it. Consider a very simple json document that I intend to store in Couchbase: {"key":"1","value":"one"} and a Java class to hold ...

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New Releases with a Better Kotlin API, Dataflow for Clojure and Faster Web Actors

Today we have released minor updates to Quasar, Pulsar and Comsat. The releases contain bug fixes, and some new features including an improved Kotlin API, dataflow variables for Clojure and fast implementations of Web Actors on top of Undertow and Netty. Elegant fibers and channel selection with Kotlin Quasar 0.7.0 introduced a natural Kotlin API (that feels like Erlang) for Quasar ...

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Displaying progress of Spring application startup in web browser

spring-interview-questions-answers

When you restart your enterprise application, what do your clients see when they open the web browser? They see nothing, server doesn’t respond yet so web browser displays ERR_CONNECTION_REFUSED Web proxy (if any) in front of your application notices that it’s down and display “friendly” error message The website takes forever to load – it accepted socket connection and HTTP ...

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JBoss BPM Microservices Integration Guide Based on JBoss Fuse 6.2

Early this year we announced the exciting example project for JBoss BPM Suite that centers around a working online Travel Agency project. This initially leveraged web services, that we later migrated to microservices with the help of JBoss Fuse. With the release of JBoss Fuse 6.2, we wanted to revisit the project and make sure you had the latest greatest ...

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Use of optional is optional

After the article of last week “Optional in collections” today I can’t help but talking a bit more about the same beast. A bit more detail. The class Optionial originally introduced by Google Guava and later included in the Java 8 package is simply a wrapper that wraps an optional object. The wrapped object is optional in the sense that ...

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Walkmod: automatically refactor code to apply code conventions

I am very interested in tools which support the software development process, making automatic the boring bits. One system which permits to go in that direction is Walkmod: a smart tool which can refactor Java projects and enforce code conventions. It is a quite powerful tool and it should ges more and more attention. TL; DR: Tools like Sonar find issues in ...

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Refactoring with Kleisli Composition

For quite awhile we have been maintaining an application that processes XML and JSON data. Usually the maintenance consists of fixing defects and adding minor features, but sometimes it requires refactoring old code. Consider, for example, a function that extracts an XML node by path: import scala.xml.{Node => XmlNode} def getByPath(path: List[String], root: XmlNode): Option[XmlNode] = path match { case ...

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