Paul Rayner

Many of the problems encountered in scaling, parallelizing and distributing systems that tend to be addressed in ad-hoc ways are actually deeply connected with the manner in which the business domain has been modeled. Domain-Driven Design (DDD) has rich modeling resources for tackling concurrency, transactional and distribution boundary issues within the domain model itself, enabling teams to be more effective in dealing with business complexity and change.

Learn about how aggregates can enrich your domain models, improve system performance and loosely couple your systems. We will give examples of how aggregate design choices are manifested in NoSQL data schemas, focusing particularly on MongoDB, and the consequences of making these choices for domain modeling, performance, and scaling.

Behavior-Driven Development (BDD) employs the approach of specification by example. Cucumber is such an amazing BDD tool because it’s so good at mapping stories and acceptance criteria to automated functional tests. This is a hands-on workshop using Cucumber-JVM that will have you writing and automating acceptance tests on your own laptop by the conclusion of the session.

This workshop will cover:

• Building quality in
• Understanding the place of BDD - The agile testing matrix.
• Why test automation?
• Build the right product using specification by example
• The need for Ubiquitous Language
• Writing scenarios with Cucumber
• Using Cucumber to test web applications

This is a hands-on 90 minute workshop with Cucumber-JVM using Java, you will need a laptop running the JDK and a text editor (doesn't have to be an IDE). Class tools, materials and code exercises will be provided.

This presentation seeks to provide a solid introduction to the fundamentals of DDD. Learn why modeling a complex business domain in software is so advantageous to your business and ways in which your team can go about delivering software models to give your business a competitive edge.

The philosophy of domain-driven design (DDD) – first described by Eric Evans in his book [of the same name – is about placing our attention at the heart of the application, focusing on the complexity that is intrinsic to the business domain itself. We also distinguish the core domain (unique to the business) from the supporting sub-domains (typically generic in nature, such as money or time), and place appropriately more of our design efforts on the core.

Domain-driven design consists of a set of patterns for building enterprise applications from the domain model out. In your software career you may well have encountered many of these ideas already, especially if you are a seasoned developer in an OO language. But applying them together will allow you to build systems that genuinely meet the needs of the business.

The premise of domain-driven design is two-fold:

• For most software projects, the primary focus should be on the domain and domain logic; and
• Complex domain designs should be based on a model.

Domain-driven design is not a technology or a methodology. It is a way of thinking and a set of priorities, aimed at accelerating software projects that have to deal with complicated domains.

Note: Laptops are not required - there is no hands-on coding for this workshop.

Build your awareness of the basic concepts and value of Domain-Driven Design (DDD) in one day through group exercises, paired code walkthroughs, lecture and games.

Understand what DDD is and when and why it is valuable to software intensive organizations. Overview the basic principles and processes needed develop the useful sort of models, tie them into implementation and business analysis, and place them within a viable, realistic strategy.

Topics Introduced

Morning

• What is DDD and how is modeling useful?
• Developing a shared modeling language to enable effective collaboration
• Using reference scenarios to guide modeling
• What makes a model useful to a software project?
• Architectural options for implementing DDD
• Aggregate design - applying effective aggregate design for both relational and NoSQL solutions
• Domain events - decoupling, scaling and modeling chronology in distributed systems

Afternoon

• Prioritizing sophisticated design for where it will have the greatest impact
• Clarifying a shared vision
• Mapping the terrain of your systems to enable effective modeling and design
• Integrating agile with rigorous design
• Succeeding with DDD and avoiding common adoption pitfalls

Successful software development is about building the right product at the right time for your customers. This means focusing attention on the right places in the portfolio of projects and products that your company provides, and optimizing the entire value stream from “concept to cash” for your customers and the development teams.

Agility is more than just adopting Scrum or some other agile process framework; it involves adopting a new set of Lean-Agile values, principles and practices through the entire software development lifecycle and beyond in order to provide value to customers earlier and more often.

Lean-Agile software development consists of frequent feedback loops, intense team collaboration, continuous improvement, business and customer involvement, baking quality in and consistent delivery of valuable software. Learn how these Lean principles and practices transform software development and the radical difference it can make in your development work and wider organization.

Learn what it takes to move beyond mere management to inspiring leadership. Many never receive any leadership training before being thrust into a leadership role. This presentation gives you a set of frameworks and thinking tools to help you understand various leadership styles, as well as providing you with concrete next-steps you can try with your team.

Rear Admiral Grace Murray Hopper, one of the first programmers of the Harvard Mark I computer, once said, “You manage things; you lead people.” Leading software teams is challenging, difficult work. However, being a leader can also be inspiring and energizing. Whether you are an manager, architect, Scrum Master, director, project manager, dev lead or simply aspiring to lead others, you will come away from with this session with a fresh understanding of what it takes to influence change in others, and inspired to become a great team leader.

This presentation explores the nature of motivation and the place of metrics and measurement in software development, and how lean software development principles and practices shed light on motivation and metrics and how they can be used to support deep organizational improvement.

We will examine the nature of motivation in terms of the four intrinsic rewards that drive positive engagement, and also how certain approaches to measuring and managing performance lead to organizational dysfunction. We will also show how the application of lean principles such as building quality into the product, respect for people and optimizing the whole enable more effective approaches to motivation and metrics in software development.

Not every part of a software system will be well-designed. How do you know where to put the time and effort to refine the design, or refactor existing code? Learn how strategic Domain-Driven Design (DDD) patterns can show you how to know which parts of your system matter most to your business and how to focus your team's design efforts most effectively.

Context mapping and Core Domain are key concepts in DDD, providing valuable techniques and insights into where to focus your design attention, yet most developers have never heard of them. This session will introduce the tools of strategic DDD and show you how they can shine a light on your design challenges.

Come on a guided tour of how applying Domain-Driven Design (DDD) building block patterns can make your code cleaner, more expressive, and more amenable to change. We cover examples of DDD patterns such as entities, value objects, closure of operations and side-effect-free functions. We will focus particularly on how implementing value objects can lead to more supple design.

When good design really matters, DDD building block patterns enable your design to model the business domain you are working with more richly. They allow you to collaborate with domain experts to build deep, useful models of the domain in your code that solve difficult business problems with elegance and simplicity.

This is a highly interactive modeling session which walks through diagrams and code samples to demonstrate how the application of these patterns to modeling can make writing and reading coding fun again, while improving the effectiveness of the code you write. Come prepared to think, ask and answer questions, and learn how to write the best code where it matters most.