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Java

Java Feature Spotlight: Sealed Classes

The release of Java SE 15 in Sept 2020 will introduce "sealed classes" (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may extend it. Sealed classes, like enums, capture alternatives in domain models, allowing programmers and compilers to reason about exhaustiveness.

Brian Goetz
on Jun 17, 2020
Culture & Methods

Q&A on the Book Leveraging Digital Transformation

The book Leveraging Digital Transformation - Proven Leadership and Innovation Strategies to Engage and Grow Your Organization by M. Nadia Vincent is a guide for implementing digital transformations. It explores how to lead a digital transformation, how to engage people into the transformation, and what can be done to enable digitalization and innovation.

Ben Linders M. Nadia Vincent
on Jun 16, 2020
Architecture & Design

Using a DDD Approach for Validating Business Rules

If the goal is to create software applications that emulate the behavior of domain experts, then the challenge is in capturing and implementing the business rules. This is more a factor of good knowledge management than it is raw coding ability. Following techniques from Domain-Driven Design can provide a structure for effectively validating and implementing business rules in a system.

Fabian Lopez
on Jun 15, 2020
Culture & Methods

Working Together in the Same Direction with Obeya

Obeya1 is a proven approach that facilitates teamwork and the alignment of activities around seven panels to deliver IT or manufacturing products. It accelerates the regular resolution of good problems by breaking down barriers between teams and it also benefits from the support of the management. The purpose of this article describes the first Obeya panel: vision

Edmond Nguyen Reynald Debaut-Henocque
on Jun 14, 2020
Java

TornadoVM: Accelerating Java with GPUs and FPGAs

The proliferation of heterogeneous hardware represents a problem for programming languages such as Java that target CPUs. TornadoVM extends the Graal JIT compiler to take advantage of GPUs & FPGAs and provides a flexible, high-level model whilst still enabling high performance and features such as live task migration.

Juan Fumero
on Jun 13, 2020
Cloud

State at the Edge: an Interview with Peter Bourgon

Building upon topics in his talk at QCon London, Peter Bourgon answers questions about edge computing, distributed data, and the complexity of synchronization.

Peter Bourgon Richard Seroter
on Jun 12, 2020
.NET

Blazor RenderTree Explained

Blazor is a new single page application (SPA) framework from Microsoft that relies on the .NET framework in favor of JavaScript. As part of its component development model, Blazor uses a DOM abstraction called a RenderTree. In this article we’ll learn what exactly a DOM abstraction is, what the RenderTree is used for, and why Blazor developers should know about it.

Ed Charbeneau
on Jun 10, 2020
Culture & Methods

Q&A on the Book Learning to Scale

The book Learning to Scale by Régis Medina explores how to apply lean as an education system to scale companies and help people think about their work and learn together to create value. It provides an enterprise model built on how people learn and grow based on the idea that when people understand what they do and why they do it, they become better in what they do and the company moves faster.

Ben Linders Régis Medina
on Jun 09, 2020
Web Development

Crank, a New Front-End Framework with Baked-In Asynchronous Rendering - Q&A with Brian Kim

Brian Kim introduces Crank.js, a new front-end framework with baked-in asynchronous rendering. The framework orchestrates front-end applications' tasks and rendering with standard asynchronous generators. Crank strives to be Just JavaScript, and reduces the number of concepts that need to be acquired to write a front-end application. Gone are proprietary notions of asynchronous resources.

Brian Kim Bruno Couriol
on Jun 08, 2020
Culture & Methods

Well-Being with Dr O'Sullivan, Part 3: Tech-Ing Care of Your Community

Dr Michelle O’Sullivan, clinical psychologist, provides advice on interacting with your fellow workers, friends and family to provide support to their mental well-being in difficult times. She discusses connecting and listening skills, which are key to being an effective team member in any environment. Practical researched tips to help you think about yourself and others.

Michelle O'Sullivan
on Jun 07, 2020
Development

Understandability: The Most Important Metric You’re Not Tracking

Understandability is the concept that a system should be presented so that an engineer can easily comprehend it. The more understandable a system is, the easier it will be for engineers to change it in a predictable and safe manner. A system is understandable if it meets the following criteria: complete, concise, clear, and organized.

Liran Haimovitch
on Jun 06, 2020
Java

Running Axon Server - CQRS and Event Sourcing in Java

Axon Server Standard Edition is an Open Source, purpose-built solution supporting distributed CQRS and Event Sourcing applications written in Java with the Axon Framework. Part one in this series discusses running it locally and explores aspects of Administration/Security and Configuration. It also discusses more advanced features available with the Enterprise Edition - Clustering/Multi-Contexts.

Bert Laverman
on Jun 05, 2020