Introducing the silverlight cookbook

•Download as PPTX, PDF•

0 likes•813 views

The document introduces the Silverlight Cookbook, which provides recipes for building Silverlight applications using practices like MVVM, coroutines, commanding, querying, and domain events. It discusses traditional and recommended Silverlight architectures, and frameworks that can be used like Caliburn Micro, AutoFac, and NHibernate. The presentation provides background on these topics and examples from the Silverlight Cookbook.

Introducing the Silverlight Cookbook
Why, what, how and when

Dennis Doomen

© 2011 Aviva Solutions dennis.doomen@avivasolutions.nl 25 februari 2012

About Me
• Principal Consultant
• 14 years IT experience
• C++ origins but C# since 2001
• Specialties
• .NET Architecture
• Scrum/XP
• ALM
• Speaker
• Public initiatives
• Silverlight Cookbook
• C# Coding Guidelines
• Fluent Assertions
• Internet
• www.dennisdoomen.net
• DZone MVB
• @ddoomen
© 2011 Aviva Solutions Dennis Doomen 25 februari 2012

Defining an architecture
1. Collect non-functionals
2. Determine deployment environment
3. Determine usage
4. Select engineering principles
5. Read between the lines
6. Select technology
7. Define reference architecture
8. Build & adapt

© 2011 Aviva Solutions Dennis Doomen 25 februari 2012

Design Decisions
• Tiers vs. Layers
• Integration
• Distribution
• Scalability
• Security
• Deployment
• Diagnostics
• Reliability

© 2011 Aviva Solutions Dennis Doomen 25 februari 2012

The Silverlight Cookbook
• Silverlight 5
• Fully automated testing (almost )
• Complex domain logic
• Task Based
• Scalable
• Responsive
• Any relational DB
• Overkill for most applications, so pick & choose

© 2011 Aviva Solutions Dennis Doomen 25 februari 2012

The traditional
architecture…

© 2011 Aviva Solutions 25 februari 2012

Shell Views (XAML + C#)  Well-known
 Rich domain models
Silverlight 5

View Models
 Many frameworks
Application Controller
 Very flexibele
Service Agent × Lots of work
× Lots of plumbing needed
× Not using RIA frameworks
DTOs
× DTO conversion troubles
× No eager loading
WCF

Service Interface

Service Actions Domain Model Workflows
Nhibernate 3.x
(+ Fluent)

Repositories Unit-of-Work Service Agents

Backoffice External
Database System Service

© 2011 Aviva Solutions 25 februari 2012

As Microsoft wants it…

© 2011 Aviva Solutions 25 februari 2012

Shell Views (XAML + C#)  Easy to build

Silverlight 5

View Models
Simple domain models
 Less plumbing needed
Application Controller
 No DTO conversions needed
Domain Context  Maximizes RIA frameworks

WCF RIA Services

Great for CRUD
 Batching
Changesets
× CRUD-based
× Domain model not possible
Domain Service
× No dynamic relationship
Entities Business Actions loading
× Almost enum support
Entity Framework Service Agents
× No 2nd level caching

Backoffice External
Database System Service

© 2011 Aviva Solutions 25 februari 2012

Then what?

© 2011 Aviva Solutions 25 februari 2012

Shell Views (XAML + C#)

Caliburn Micro
Silverlight 5

AutoFac
Coroutines View Models

Application Controller

Service Agent Bootstrapper
WCF Data Services

DTOs Commands

Query Services Command Service

Event Handlers Command Handlers

AutoFac
Logging
Nhibernate 3.x
(+ Fluent)

Domain Events Domain Model

Repositories Unit of Work Service Agents

Backoffice External
Database System Service

© 2011 Aviva Solutions 25 februari 2012

Commanding
Concurrency
Validation
Querying
Testability Business Rules

Recipes
Data Access
Deployment
Exception Handling IoC
Composition
Logging Asynchronity

© 2011 Aviva Solutions 25 februari 2012

What’s Next?
• Nicer Design
• WinRT? HTML5?
• Query Optimization
• Key-Based Commanding
• More CQRS
• Authentication
• Authorization
• Globalization
• Fluent Migration

© 2011 Aviva Solutions Dennis Doomen 25 februari 2012

Background Information
MVVM, Coroutines, Commanding, Querying, Domain Events,
Testable Repository Pattern

Example Code, Frameworks
Silverlight Cookbook, Caliburn Micro, AutoFac, NHibernate,
Fluent NHibernate, Fluent Assertions

© 2011 Aviva Solutions 25 februari 2012

Email
dennis.doomen@avivasolutions.nl

Twitter
@ddoomen

Blog
www.dennisdoomen.net

© 2011 Aviva Solutions 25 februari 2012

Come to this session and see how Novell Privileged User Manager can help your organization reduce the cost, complexity and risk associated with managing superusers across the enterprise. Find out how to rapidly deploy superuser management for Novell Open Enterprise Server 2. You will see a live demo of how Novell Privileged User Manager allows you to control what commands users are authorized to run, at what time and from what location.

Novell Success Stories: Endpoint Management in Education

Novell

RightScale Conference Santa Clara 2011: What is the cloud and how do you manage it? Uri Budnik will discuss the cloud technology landscape and where RightScale fits in to drive agility, cost, and time savings above cloud infrastructure. RightScale has been investing heavily for the past four years to make cloud infrastructure easy to leverage. This session will clarify elements that are straightforward, what continues to be difficult, and the impact on your schedule and budget.

14h00 aws deck-summit2012_sap_on_aws_s_jones_finalLuiz Gustavo Santos

Vision dt solutions vmug leeds

subtitle

Perspectives and Case Studies on Effective Theatre Base Service ManagementIBMGovernmentCA

IBM Cloud Burst postavená na platforme IBM System x

ASBIS SK

Stairway to heaven webinarCloudBees

Cloud Computing and System zdkang

2011 04-dsi-javaee-in-the-cloud-andreadis

dandre

Adobe Salon Linux

Michael Chaize

ITCamp 2012 - Paul Roman - Hybrid solutions in Office 365ITCamp

Do More with Oracle Environment with Open and Best of breed Technologies

EMC Forum India

Comprehensive, converged integration platform: IBM Starter Kit for Cloud x86 ...

IBM India Smarter Computing

Was ist neu in Exchange 2013?

Digicomp Academy AG

Windows azure uk universities overview march 2012

Lee Stott

Architecting a Private Cloud - Cloud Expo

smw355

Tim Cramer, Eucaday

Greg DeKoenigsberg

Building autonomous components with OWIN, PSake, NuGet, GitVersion and Swagger

Dennis Doomen

Breaking down monolothic systems into smaller components that are maintained by specific people in separate git repositories and distributed as NuGet packages is becoming the standard these days. But what if your component needs to expose some kind of HTTP end-point such as a WebAPI controller or an embedded management website? How do you host such a component in another system without affecting it's hosting model? This is were the Open Web Interface for .NET comes to the rescue. Even the next version of ASP.NET is completely based on OWIN hosting. In this session I'm going to explain you how to build OWIN middleware components and how to host these in an IIS website, a Windows Service or even in a command-line tool.

The Good, The Bad and The Ugly of Event Sourcing

Dennis Doomen

In 2009, I first learned about Event Sourcing and Command Query Responsibility Seggregation (CQRS) at a training Greg Young gave in Utrecht, The Netherlands. I remembered to be awed by the scalability and architectural simplicity those styles provided. However, I also remembered the technical complexity that comes with it. In 2012, I was in charge of transitioning a CQRS-based system to Event Sourcing. I knew it would be non-trivial, but boy was I in for a surprise. So over the last four years I've experienced first-hand how a large group of developers had to deal with the transition. It's a brilliant solution for high-performance or complex business systems, but you need to be aware that this also introduces challenges most people don't tell you about. In this talk, I'd like to share you some of the most powerful benefits of ES, but also show you the flipside of the coin and cover some of the smaller and bigger challenges you'll run into it. Again, I love it and would apply it again without any doubt, but I really want you to understand the trade-offs before you jump on the Event Sourcing train.

What's hot

Oracle tech db-04-cost-effective-neum-16.04.2010Oracle BH

Unified FlexPod Management and Automation

subtitle

Macleans - NZ Business taking on the world with a world class IT infrastructu...

Vincent Kwon

Presentaties seminar de virtuele realiteit

Joan Tuls

5 Cloud Commandments - Why Cloud Management Makes Sense

RightScale

14h00 aws deck-summit2012_sap_on_aws_s_jones_finalLuiz Gustavo Santos

Vision dt solutions vmug leeds

subtitle

Perspectives and Case Studies on Effective Theatre Base Service ManagementIBMGovernmentCA

IBM Cloud Burst postavená na platforme IBM System x

ASBIS SK

Stairway to heaven webinarCloudBees

Cloud Computing and System zdkang

2011 04-dsi-javaee-in-the-cloud-andreadis

dandre

Adobe Salon Linux

Michael Chaize

ITCamp 2012 - Paul Roman - Hybrid solutions in Office 365ITCamp

Do More with Oracle Environment with Open and Best of breed Technologies

EMC Forum India

Comprehensive, converged integration platform: IBM Starter Kit for Cloud x86 ...

IBM India Smarter Computing

Was ist neu in Exchange 2013?

Digicomp Academy AG

Windows azure uk universities overview march 2012

Lee Stott

Architecting a Private Cloud - Cloud Expo

smw355

Tim Cramer, Eucaday

Greg DeKoenigsberg

What's hot (20)

Oracle tech db-04-cost-effective-neum-16.04.2010

Unified FlexPod Management and Automation

Macleans - NZ Business taking on the world with a world class IT infrastructu...

Presentaties seminar de virtuele realiteit

5 Cloud Commandments - Why Cloud Management Makes Sense

14h00 aws deck-summit2012_sap_on_aws_s_jones_final

Vision dt solutions vmug leeds

Perspectives and Case Studies on Effective Theatre Base Service Management

IBM Cloud Burst postavená na platforme IBM System x

Stairway to heaven webinar

Cloud Computing and System z

2011 04-dsi-javaee-in-the-cloud-andreadis

Adobe Salon Linux

ITCamp 2012 - Paul Roman - Hybrid solutions in Office 365

Do More with Oracle Environment with Open and Best of breed Technologies

Comprehensive, converged integration platform: IBM Starter Kit for Cloud x86 ...

Was ist neu in Exchange 2013?

Windows azure uk universities overview march 2012

Architecting a Private Cloud - Cloud Expo

Tim Cramer, Eucaday

Viewers also liked

Building autonomous components with OWIN, PSake, NuGet, GitVersion and Swagger

Dennis Doomen

The Good, The Bad and The Ugly of Event Sourcing

Dennis Doomen

Why we ditched TFS and embraced Git, Github, TeamCity and Myget

Dennis Doomen

For over three years our product development organization has been growing from about 8 developers to the 45 we have now. As a Microsoft oriented organization, the obvious choice has been Team Foundation Server because of it’s many integrated elements such as source control, build environment, work item tracking, dashboards and reporting. However, during the third year the number of concurrent releases increased significantly so we started to get faced with the limitations of its centralized source control. About 6 months ago, we decided to finally make the switch to Git, a well-known distributed source control approach very popular in the open-source community. Many of us were already active in open-source projects, but introducing git in a large group of people has been, let’s say, interesting. In this session, I’d like to share the approach we took, the challenges we had, and how we solved most of them. Of course I will share the fundamental concepts behind Git and explain you why Git is so much better than a centralized source control solution.

How to practice TDD without shooting yourself in the foot

Dennis Doomen

It's 2016, so practices like Test Driven Development (TDD) have long found their way into organizations. However, the practices and principles to keep those unit tests maintainable haven't really changed. Still, I regularly talk to developers that somehow ended up with an incomprehensible unmaintainable set of unit tests that they once believed in, but are now holding them back. So in this session I like to provide a refresh of those fundamental ideas and talk about why you should practice TDD, revealing intentions, naming conventions, state versus interaction based testing, and how to stay out of the debugger hell with proper mocking and assertion frameworks. And even if you believe you are well versed in the testing realm, join me anyway. Maybe we can learn some tips & tricks from the audience as well. Looking forward to it!

Building occasionally connected applications using event sourcing

Dennis Doomen

I've recently got the opportunity to work on a large enterprise-class system that needs to be deployed on multiple occasionally connected oil platforms and boats. Already the system's architecture was based on the Command Query Separation principles, this gave us a completely new challenge. After several months of looking at alternatives, we decided to go the Event Sourcing direction. In this in-depth session, I'd like you to learn the many alternatives we observed, the pros and cons, and the technical details of our final solution in which we use EventStore 3.0 and elements of NCQRS and Lokad.CQRS to synchronize systems over unreliable connections in a very efficient way.

Little productivity tools every developer should use

Dennis Doomen

During my last few talks I was surprised to learn how few developers are aware of the power of Microsoft OneNote, one of the products in the Microsoft Office suite. OneNote is an advanced digital notebook that I use for accessing my personal notes through SkyDrive or Office 365, as well as a shared notebook that agile teams use for keeping track of who is doing what. In fact, those who practice Test Driven Development will be surprised how essential OneNote is. In addition to OneNote, many other tools and add-ons exist that can really boost your productivity. Some you may know, some you don't. But do you already get the most out of tools like NuGet, GhostDoc, ReSharper, Notepad++, and many others? If you're in doubt, come check out my session. I'lI show you what I use to be as efficient as possible in my job as a professional developer.

Git like a Pro (How to use it as it was meant to)

Dennis Doomen

By now, I hardly think anybody needs an introduction to Git. It's becoming the de-facto standard for open-source projects, as well as the main source control system for a lot of corporations. However, Git is just one part of it. Combining it with modern hosting platforms like Github, Bitbucket or Visual Studio Online allows some truly fascinating ways of working with lots of people. Pull Requests, GitFlow, MyGet and GitVersion are crucial in a scalable software development organization. In this session I'll share how we've been using Git and these tools for over two years now. I'll explain how these tools helped us. I'll show you some awesome uses of Git that will truly help you in your day-to-day work.

Viewers also liked (7)

Building autonomous components with OWIN, PSake, NuGet, GitVersion and Swagger

The Good, The Bad and The Ugly of Event Sourcing

Why we ditched TFS and embraced Git, Github, TeamCity and Myget

How to practice TDD without shooting yourself in the foot

Building occasionally connected applications using event sourcing

Little productivity tools every developer should use

Git like a Pro (How to use it as it was meant to)

Similar to Introducing the silverlight cookbook

Dell and OpenStackeNovance

Monitoring thecloud openstackdaysturkey

Mohamed ELMesseiry

Cloud Computing: Making IT Simple

Bob Rhubart

Cloud platform technical sales presentation

Nuno Alves

Cloud Computing - Making IT Simple

Bob Rhubart

How to Transform Enterprise Applications to On-premise Clouds with Wipro and ...Eucalyptus Systems, Inc.

Cloud Computing at UTM Shillong

Capgemini

Christian ferber cloud platform_cloudportalDigicomp Academy AG

Comparing Ruby on Rails Public vs. Private Cloud Options

Altoros

The number of Ruby on Rails applications running in the cloud has been augmenting. And so has the number of public and private cloud solutions for Ruby on Rails. Choosing between them and—even before that—choosing between a public and a private cloud can be difficult. This white paper is intended to show you when you can benefit from running your Ruby on Rails application in the cloud, explain the differences between a public and a private cloud, and help you choose between the two.

Agile 2012 Conference briefing deck for Analyst and Press

Laszlo Szalvay

Aspects of Modern APM Solutions

nlwebperf

Cloud Computing - Making IT Simple

Bob Rhubart

The road to Cloud Computing is not without a few bumps. This session will help to smooth out your journey by tackling some of the potential complications. We’ll examine whether standardization is a prerequisite for the Cloud. We’ll look at why refactoring isn’t just for application code. We’ll check out deployable entities and their simplification via higher levels of abstraction. And we’ll close out the session with a look at engineered systems and modular clouds. (As presented by Dr. James Baty at Oracle Technology Network Architect Day in Chicago, October 24, 2011.)

WebLogic 12c Developer Deep Dive at Oracle Develop India 2012

Arun Gupta

Demystifying System Center 2012

C/D/H Technology Consultants

You don’t have to embrace the Private Cloud to take advantage of the powerful tools in SC2012! View C/D/H’s slide deck and learn how to enable an automated helpdesk solution with Service Manager, the Self-Service Portal, Orchestrator, Configuration Manager, and Operations Manager. Let us help you automate simple, repetitive, but time consuming tasks so you can focus on strategic projects like operating system deployment, proactive monitoring, and standardization!

Oracle Cloud Reference Architecture

Bob Rhubart

Private cloud in a boxKamesh Pemmaraju

M3 Modernization Case StudyADC Austin Tech

Rightscale Webinar: Designing Private & Hybrid Clouds (Hosted by Citrix)

RightScale

Do you want to turn your existing data center into a private cloud? Exploring how to integrate your private cloud with a public cloud? In this webinar, we will discuss key considerations when designing a private cloud from internal resources and best practices for architecture of private and hybrid clouds. The webinar will include a demonstration, plus real-world examples of customers running their private cloud implementations on Citrix CloudPlatform using RightScale. Topics to be covered: • When to use private clouds • Hardware selection • Reference architectures and design considerations • Use cases and real-life scenarios • Managing your cloud resources effectively

Similar to Introducing the silverlight cookbook (20)

Dell and OpenStack

Monitoring thecloud openstackdaysturkey

Cloud Computing: Making IT Simple

Cloud platform technical sales presentation

Cloud Computing - Making IT Simple

How to Transform Enterprise Applications to On-premise Clouds with Wipro and ...

Cloud Computing at UTM Shillong

Christian ferber cloud platform_cloudportal

Comparing Ruby on Rails Public vs. Private Cloud Options

Agile 2012 Conference briefing deck for Analyst and Press

Aspects of Modern APM Solutions

Cloud Computing - Making IT Simple

WebLogic 12c Developer Deep Dive at Oracle Develop India 2012

Demystifying System Center 2012

Oracle Cloud Reference Architecture

Private cloud in a box

M3 Modernization Case Study

Rightscale Webinar: Designing Private & Hybrid Clouds (Hosted by Citrix)

More from Dennis Doomen

Getting a grip on your code dependencies (2023-10)

Dennis Doomen

I'm sure every developer wants to be able to change code with confidence and without fear. Readable and self-explanatory code is one aspect of that. Too much coupling is another major source of problems that prevent you from changing one part of the system without causing side-effects. In this talk, I'd like you to show you common sources of unnecessary coupling and offer you options to help prevent and/or break those. I'll talk about how principles like Don't Repeat Yourself and Dependency Injection can be a double-edge sword, how to detect too unnecessary dependencies and how to use the Dependency Inversion Principle to unravel some of those. And yes, I will also talk about controlling dependencies on the package level. Challenge 1. How to prevent too much coupling? 2. We are tought to decrease coupling and increase cohesion 3. How do you increase cohesion? By applying DRY! 4. But DRY creates more coupling 5. And too much decoupling results in a forest of abstractions 6. The solution is… find a balance (or "it depends") On the architecture level 1. Use architecture style that embraces DIP (e.g. Onion, Hexagon, Clean Architecture) 2. Organize your code along functional boundaries -> this will make it easier to break off that boundary for rebuilding/strangler/microservices. 3. Apply DRY within those boundaries only, but allow shared services for complicated capabilities 4. Align your test scope with those internal boundaries… On the package level • Classes and interfaces that are almost always used together should be packaged together. Those that don’t meet that criteria don’t have a place in that package • Packages should not require changes (and thus a new release) for unrelated changes. • There must be no cycles in the dependency structure • A package should only depend upon packages that are more stable than it is or abstract packages On the code level • Avoid technical folders and organize them by functionalities or capabilities • Things in adjacent folders usually mean they are separate boundaries • Use the Tell, Don't Ask principle • Use the Law of Demeter to detect unnecessary coupling • Encapsulate primitive types and collections in specific types • Dependency injection is great, but try to avoid a global container • It's fine to inject concrete classes inside boundaries Strategy for legacy code 1. Ensure you have a safety net using characterisation tests 2. Find existing seams and decouple them better a. Identify modules or functional slices b. Identify groups of classes that are supposed to be used together and are designed to be reusable c. Identify interfaces or abstractions in DI registration code and see if they are truly designed for reusability d. Assume that code in adjacent folders is supposed to be independent e. Move code from different technical folders that belong together in their own (functionally named) folderPublic 3. Use that to define (and visualize) the target architecture

Tools and practices to help you deal with legacy code

Dennis Doomen

We all love to build greenfield projects, but the reality is that in most jobs you have to deal with a lot of legacy code. This doesn't mean the code is bad. It just means that choices were made that were the right ones at that time, or that the developers were not entire up-to-date with modern development practices. And that's exactly what this talk is about. I enjoy taking such a codebase and gradually introduce architectural seems, add a proper build pipeline, introduce temporary tests and then gradually refactor the codebase to combine more maintainable, testable and reliable. So in this talk, I'd like to unfold my extensive toolbox of practices, principles, tools and mindset to help you improve your legacy code without jeopardizing your business. Understand production environment See which vinaries are running in production and what config files are used Verify the code and the production release are in sync, e.g. DotPeek Analyze logs to understand what features are used Try to get it to run on a local environment Understand code Generate project diagrams and class hierarchies Find origin calls and destination of a parameter using Rider Use navigation options to find inheritors, usages, etc. Use the namespaces and project names to understand the relation Have Rider's AI Assistant or ChatGPT explain the code Track all documentation in a single place Build C4 diagrams Find dead code Reduce the scope of types and members to internal to find more dead code Detect code inefficiencies and dead code using Rider Remove commented out code Build a safety net If therea are tests, add code coverage reporting using Coverlet and use that to find dark spots (HTTP API) Characteristics tests using FluentAssertions, Bogus, xUnit. Use AI to generate them. It's fine, you'll delete them later on Use test containers for .net t lo include the databse Build a couple of end to end UI tests e.g. using Cypress, Playwright, efc Improve deployability Add scripts or builds steps to run the code locally, Nuke build pipeline to get consistency Adopt a version strategy and name branches accordingly Adopt automatic versioning using GitVersion Adopt logging and exception strategy, e.g. Serilog Pulumi to automate PR deployments Improve code Treat all warnings as errors and fix thhem Editorconfig / eslint so auto-format works Configure a personal Rider/R# clean-up profile to auto-format file, project and solution Roslyn analyzers Microsoft.CodeAnalysis.BannedApiAnalyzers StyleCop.Analyzers CSharpGuidelinesAnalyzer Roslynator.Analyzers Meziantou.Analyzer Enable nullable types per file Move new code to .NET 6+ or cross-compile Switch to newer C# versions, possibly using Polysharp File-scope namespaces Target-typed news switch expression String interpolation instead of string.format Use Directory.Build.Props to reduce duplication Improve naming whenever you can Encapsulate prim itive types and collections in d

What you can learn from an open-source project with 250 million downloads

Dennis Doomen

Providing a high quality library like that doesn't come for free. We've been trying to write code that is clean enough for our contributors, write tests that are self-explanatory, ensure breaking changes are strictly controlled and try to make it easy to use. In this talk, I'd like to share the tools and techniques we have been using. I'll talk about the release strategy, documentation, versioning, naming conventions, code structure, the build pipeline, automated testing, code coverage, API change detection, multi-targeting and more. In this talk, I'd like to share the tools and techniques we have been using, how they've enriched our day jobs, and how they may do that for you too. I'll talk about the release strategy, documentation, versioning, naming conventions, code structure, the build pipeline, automated testing, code coverage, API change detection, multi-targeting and more.

Getting a grip on your code dependencies

Dennis Doomen

My Laws of Test Driven Development (2023)

Dennis Doomen

About 15 years ago, I got inspired by a series of posts on Test Driven Development written by the Jeremy D. Miller. Now, with many years of great and not-so-great experiences practicing Test Driven Development, I thought it is the time to capture my own “laws”. The term "law" is obviously an exaggeration and "principles or heuristics" cover my intend much better. Either way, I want to talk about the scope of testing, using the observable behavior, naming conventions, state-based vs interaction-based testing, the impact of DRY, patterns to build useful test objects and some of the libraries and tools I use. In short, everything I try to follow every day I write, review or maintain code.

Design patterns for Event Sourcing in .NET

Dennis Doomen

Event Sourcing is becoming more mainstream these days, and a lot of conferences have demonstrated the pros and cons of this architecture style from multiple angles. I've done a few of these and publishes a lot of articles on best practices and solutions to common problems. But what nobody did was to show you how to build an event sourced systems in the .NET ecosystem. There are a lot of open-source projects that you can use, so you'll need to find a right mix and your own code to that. So let me show you how I would implement this in .NET with almost 10 years of Event Sourcing experience behind my belt.

Automate Infrastructure with Pulumi and C#

Dennis Doomen

Who remembers the days were you had to manually setup a physical server somewhere in a 19 inch rack? Nowadays those physical racks have been replaced by virtual machines provided by Google, Microsoft and Amazon. But some people are still provisioning them manually. The more mature organizations will script most of the provisioning using the native CLI or HTTP API provided by the specific cloud platform, but quite often those are maintained separately from the code of the system that is being deployed. Terraform by Hashicorp is another attempt to support infrastructure-as-code by using a declarative syntex to define the desired infrastructure. But then again, Yaml isn't really suited for anything but simple single-file configuration settings. Yaml isn't code and doesn't provide real Intellisense, line-by-line debugging and most importantly, refactoring. But what if you could use C# and .NET to provision your infrastructure and treat that code as first-class citizens of your codebase, including all the capabilities that you would expect? Well, let me show you how Pulumi for .NET will allow you to evolve your infrastructure code with the rest of the code base without turning it in a big spaghetti of Yaml files.

What is the right unit in unit testing (UpdateConf 2022)

Dennis Doomen

Whether you're just writing your first unit test or have been practicing Test Driven Development for many years, I'm sure your biggest challenge is to find the right scope for testing. Unfortunately a lot of books and guidance seem to imply that every class or type should be tested separately. Well, I can tell you from 15 years of unit testing experience that that's the best way to shoot yourself in the foot. In this session, I'm going to show you some concrete examples and why I chose a certain boundary for the "unit" in unit testing. I will also share design heuristics I use myself to find those boundaries and why those are not guidelines. I'll also illustrate how principals like DRY and SOLID can be both a blessing and a curse that may lead to the wrong design choices

Slow Event Sourcing (re)projections - Just make them faster!

Dennis Doomen

I don't have to tell anybody how awesome Event Sourcing is as an architecture style. But those that have been using it in production must have experienced the pains of keeping the upgrades fast enough, especially if you use a more traditional relational database like SQL Server. I've once heard somebody say: "If it's slow, make it faster", but rebuilding a big projection is simply a very expensive operations and involves a lot of network traffic between the application and the database servers. Over the years since we adopted Event Sourcing, we've been experimenting a lot and have implemented various improvements to make those reprojections faster. And we haven't stopped. We're already working on some new ideas lately. So in this session, I'd like to share those techiques, their pros and cons and how we implemented them on a more detailed level.

50 things software teams should not do.pptx

Dennis Doomen

Enough books have been written, articles have been published and Youtube videos have been posted about how you should be behaving as a software developer, Scrum Master or team lead. To be original in this unoriginal world, I started thinking about the things you should NOT be doing. I came up with 50 tools, practices and principles covering topics like dealing with complexity, productivity, architecture, testability, traceability, maintainability, transparency and predictability that I believe hamper you as a professional. That sounds like a lot, but I promise you a fun and entertaining session that I'm sure will trigger a lot of recognition.

What is the right "unit" in unit testing and why it is not a class?

Dennis Doomen

A lab around the principles and practices for writing maintainable code

Dennis Doomen

Writing maintainable code is not something that is easy to do. Not only is a pretty subjective, a lot of the techniques like Clean Code, SOLID and such can be misinterpreted resulting in unconstructive dogma. I've made it my career's goal to find a good balance between all those different patterns, principles, practices and guidelines. In this talk, I'd like to share my own ideas on what it takes to write maintainable code. I'll talk about architecture, class design, automated testing and any consequences on your development process. If you care about your code, be there with me.

How to Practice TDD Without Shooting Yourself in the Foot

Dennis Doomen

It’s 2021, so practices like Test Driven Development (TDD) have long found their way into organizations. However, the practices and principles to keep those unit tests maintainable haven’t really changed. Still, Dennis regularly talks to developers that somehow ended up with an incomprehensible unmaintainable set of unit tests that they once believed in, but are now holding them back. So in this session Dennis likes to provide a refresh of those fundamental ideas and talk about why you should practice TDD, revealing intentions, naming conventions, state versus interaction based testing, and how to stay out of the debugger hell with proper mocking and assertion frameworks.

Decomposing the Monolith using modern-day .NET and a touch of microservices

Dennis Doomen

If I have to name a single biggest hype in software architecture land then it would be "microservice". They are supposed to be small and focused, can be deployed independently, can work with any technology and will solve all your monolithical problems. But we all know that silver bullets don't exist, plus technology should never be a goal, but merely a means to an end. Nonetheless, following the path towards real microservices is a great strategy for decomposing a monolith without the deployment complexity of the first. So how do you do that? What technologies does the .NET realm offer for us? In this talk, I'll show you some of the pros and cons of micro-services and its ingredients to leverage modern-day .NET and Event Sourcing to move your monolith into a bright new future.

Event Sourcing from the Trenches (DDD Europe 2020)

Dennis Doomen

Over the years I've spoken many times about what Event Sourcing is and shared many of the good, the bad and the ugly parts of it in blog posts and various talks. However, I've never talked about how to actually build a system based on this architecture style. I keep getting the same questions over and over again. Like when to apply Event Sourcing and at what architectural level. How to deal with transactional boundaries within and outside the domain. How to build projections that are autonomous, reliable and self-supporting. How to deal with upgrades and blue-green deployments. But also on how to handle bugs, design mistakes and crashing projections. Having made a lot of these mistakes myself over these years, it's time to share my current thoughts and opinions about this. Since the .NET space has a pretty rich set of open-source projections to support this, the examples and code will be .NET. But the concepts are universal, so don't let that scare you off.

Practical introduction to DDD, CQRS and Event Sourcing

Dennis Doomen

After several in-depth talks about Event Sourcing, I realized that there's a large group of developers that may have heard about Domain-Driven Design, Command-Query Responsibility Segregation and Event Sourcing, but have not really connected the dots yet. So in this talk, I'd like to take a practical example of a simple domain and gradually introduce functional requirements to see how the principles behind DDD affect the way your entities are going to protect the business rules. After that, I'll introduce some real-world non-functional requirements and see if and how Event Sourcing and/or CQRS may or may not help to accomplish those.

How to practice TDD without shooting yourself in the foot

Dennis Doomen

It’s 2019, so practices like Test Driven Development (TDD) have long found their way into organizations. However, the practices and principles to keep those unit tests maintainable haven’t really changed. Still, I regularly talk to developers that somehow ended up with an incomprehensible unmaintainable set of unit tests that they once believed in, but are now holding them back. So in this session I like to provide a refresh of those fundamental ideas and talk about why you should practice TDD, revealing intentions, naming conventions, state versus interaction based testing, and how to stay out of the debugger hell with proper mocking and assertion frameworks. And even if you believe you are well versed in the testing realm, join me anyway. Maybe we can learn some tips & tricks from the audience as well. Looking forward to it!

Decomposing the Monolith (Riga Dev Days 2019)

Dennis Doomen

A micro-service architecture is a great strategy for decomposing a monolith. In this talk, I’ll show you some of the pros and cons of micro-services and how you can leverage OWIN, .NET, Event Sourcing and the Onion Architecture to gradually move your monolith into a bright new future. If I have to name a single hype in software architecture land then I would have to mention the micro-service architecture. Micro-services are supposed to be small, have a very focused purpose, can be deployed independently, are completely self-supporting and loosely coupled. Ideally, micro-services are technology agnostic, but hey, we’re in the .NET space, aren’t we? And they are not a goal, but a means to an end. In fact, a micro-service architecture has many benefits and are a great strategy for decomposing a monolith. So how do you build a micro-service? What technologies does the .NET realm offer for us? And what if you don’t want to deploy them independently? In this talk, I’ll show you some of the pros and cons of micro-services and how you can leverage OWIN, .NET, Event Sourcing and the Onion Architecture to gradually move your monolith into a bright new future.

A lab around the principles and practices for writing maintainable code (2019)

Dennis Doomen

Writing maintainable code is not something that is easy to do. Not only is a pretty subjective, a lot of the techniques like Clean Code, SOLID and such can be misinterpreted resulting in unconstructive dogma. I've made it my career's goal to find a good balance between all those different patterns, principles, practices and guidelines. In this talk, I like to share you my own ideas on what it takes to write maintainable code. I'll talk about architecture, class design, automated testing and any consequences on your development process. If you care about your code, be there with me.

Lessons learned from two decades of professional software development

Dennis Doomen

I recently was asked what I would do differently if I had the experience I have now. This got me thinking about the mistakes I've made, the traps I fell for and the dogmatism I became part of over the last 22 years of professional software developer in the Microsoft realm. In this talk, I'll be going down memory lane with you and share everything I've learned on architecture, tools, technologies, agile software development, maintainable code, automated testing, documentation and anything else that I think you should know. Prepare yourself for an event of stories, both good and bad.

More from Dennis Doomen (20)

Getting a grip on your code dependencies (2023-10)

Tools and practices to help you deal with legacy code

What you can learn from an open-source project with 250 million downloads

Getting a grip on your code dependencies

My Laws of Test Driven Development (2023)

Design patterns for Event Sourcing in .NET

Automate Infrastructure with Pulumi and C#

What is the right unit in unit testing (UpdateConf 2022)

Slow Event Sourcing (re)projections - Just make them faster!

50 things software teams should not do.pptx

What is the right "unit" in unit testing and why it is not a class?

A lab around the principles and practices for writing maintainable code

How to Practice TDD Without Shooting Yourself in the Foot

Decomposing the Monolith using modern-day .NET and a touch of microservices

Event Sourcing from the Trenches (DDD Europe 2020)

Practical introduction to DDD, CQRS and Event Sourcing

How to practice TDD without shooting yourself in the foot

Decomposing the Monolith (Riga Dev Days 2019)

A lab around the principles and practices for writing maintainable code (2019)

Lessons learned from two decades of professional software development

Recently uploaded

Accelerate your Kubernetes clusters with Varnish Caching

Thijs Feryn

The Art of the Pitch: WordPress Relationships and Sales

Laura Byrne

Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes? All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.

Climate Impact of Software Testing at Nordic Testing Days

Kari Kakkonen

My slides at Nordic Testing Days 6.6.2024 Climate impact / sustainability of software testing discussed on the talk. ICT and testing must carry their part of global responsibility to help with the climat warming. We can minimize the carbon footprint but we can also have a carbon handprint, a positive impact on the climate. Quality characteristics can be added with sustainability, and then measured continuously. Test environments can be used less, and in smaller scale and on demand. Test techniques can be used in optimizing or minimizing number of tests. Test automation can be used to speed up testing.

Enhancing Performance with Globus and the Science DMZ

Globus

FIDO Alliance Osaka Seminar: FIDO Security Aspects.pdf

FIDO Alliance

Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...

James Anderson

Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management. The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM). Speakers: Bob Boule Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle. Gopinath Rebala Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.

zkStudyClub - Reef: Fast Succinct Non-Interactive Zero-Knowledge Regex Proofs

Alex Pruden

This paper presents Reef, a system for generating publicly verifiable succinct non-interactive zero-knowledge proofs that a committed document matches or does not match a regular expression. We describe applications such as proving the strength of passwords, the provenance of email despite redactions, the validity of oblivious DNS queries, and the existence of mutations in DNA. Reef supports the Perl Compatible Regular Expression syntax, including wildcards, alternation, ranges, capture groups, Kleene star, negations, and lookarounds. Reef introduces a new type of automata, Skipping Alternating Finite Automata (SAFA), that skips irrelevant parts of a document when producing proofs without undermining soundness, and instantiates SAFA with a lookup argument. Our experimental evaluation confirms that Reef can generate proofs for documents with 32M characters; the proofs are small and cheap to verify (under a second). Paper: https://eprint.iacr.org/2023/1886

GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...

Sri Ambati

Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...

UiPathCommunity

💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™: See how to accelerate model training and optimize model performance with active learning Learn about the latest enhancements to out-of-the-box document processing – with little to no training required Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath. Speakers: 👨‍🏫 Andras Palfi, Senior Product Manager, UiPath 👩‍🏫 Lenka Dulovicova, Product Program Manager, UiPath

PCI PIN Basics Webinar from the Controlcase Team

ControlCase

Encryption in Microsoft 365 - ExpertsLive Netherlands 2024

Albert Hoitingh

Epistemic Interaction - tuning interfaces to provide information for AI support

Alan Dix

Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024 https://alandix.com/academic/papers/synergy2024-epistemic/ As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.

Assure Contact Center Experiences for Your Customers With ThousandEyes

ThousandEyes

GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...

James Anderson

Monitoring Java Application Security with JDK Tools and JFR Events

Ana-Maria Mihalceanu

GraphRAG is All You need? LLM & Knowledge Graph

Guy Korland

Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs. 1. Unifying Large Language Models and Knowledge Graphs: A Roadmap. https://arxiv.org/abs/2306.08302 2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs: https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/

Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf

91mobiles

Elizabeth Buie - Older adults: Are we really designing for our future selves?

Nexer Digital

Secstrike : Reverse Engineering & Pwnable tools for CTF.pptx

nkrafacyberclub

FIDO Alliance Osaka Seminar: Passkeys and the Road Ahead.pdf

FIDO Alliance

Recently uploaded (20)

Accelerate your Kubernetes clusters with Varnish Caching

The Art of the Pitch: WordPress Relationships and Sales

Climate Impact of Software Testing at Nordic Testing Days

Enhancing Performance with Globus and the Science DMZ

FIDO Alliance Osaka Seminar: FIDO Security Aspects.pdf

Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...

zkStudyClub - Reef: Fast Succinct Non-Interactive Zero-Knowledge Regex Proofs

GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...

Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...

PCI PIN Basics Webinar from the Controlcase Team

Encryption in Microsoft 365 - ExpertsLive Netherlands 2024

Epistemic Interaction - tuning interfaces to provide information for AI support

Assure Contact Center Experiences for Your Customers With ThousandEyes

GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...

Monitoring Java Application Security with JDK Tools and JFR Events

GraphRAG is All You need? LLM & Knowledge Graph

Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf

Elizabeth Buie - Older adults: Are we really designing for our future selves?

Secstrike : Reverse Engineering & Pwnable tools for CTF.pptx

FIDO Alliance Osaka Seminar: Passkeys and the Road Ahead.pdf

Introducing the silverlight cookbook

2. About Me • Principal Consultant • 14 years IT experience • C++ origins but C# since 2001 • Specialties • .NET Architecture • Scrum/XP • ALM • Speaker • Public initiatives • Silverlight Cookbook • C# Coding Guidelines • Fluent Assertions • Internet • www.dennisdoomen.net • DZone MVB • @ddoomen © 2011 Aviva Solutions Dennis Doomen 25 februari 2012

3. Defining an architecture 1. Collect non-functionals 2. Determine deployment environment 3. Determine usage 4. Select engineering principles 5. Read between the lines 6. Select technology 7. Define reference architecture 8. Build & adapt © 2011 Aviva Solutions Dennis Doomen 25 februari 2012

5. The Silverlight Cookbook • Silverlight 5 • Fully automated testing (almost ) • Complex domain logic • Task Based • Scalable • Responsive • Any relational DB • Overkill for most applications, so pick & choose © 2011 Aviva Solutions Dennis Doomen 25 februari 2012

7. Shell Views (XAML + C#)  Well-known  Rich domain models Silverlight 5 View Models  Many frameworks Application Controller  Very flexibele Service Agent × Lots of work × Lots of plumbing needed × Not using RIA frameworks DTOs × DTO conversion troubles × No eager loading WCF Service Interface Service Actions Domain Model Workflows Nhibernate 3.x (+ Fluent) Repositories Unit-of-Work Service Agents Backoffice External Database System Service © 2011 Aviva Solutions 25 februari 2012

9. Shell Views (XAML + C#)  Easy to build  Silverlight 5 View Models Simple domain models  Less plumbing needed Application Controller  No DTO conversions needed Domain Context  Maximizes RIA frameworks  WCF RIA Services Great for CRUD  Batching Changesets × CRUD-based × Domain model not possible Domain Service × No dynamic relationship Entities Business Actions loading × Almost enum support Entity Framework Service Agents × No 2nd level caching Backoffice External Database System Service © 2011 Aviva Solutions 25 februari 2012

11. Shell Views (XAML + C#) Caliburn Micro Silverlight 5 AutoFac Coroutines View Models Application Controller Service Agent Bootstrapper WCF Data Services DTOs Commands Query Services Command Service Event Handlers Command Handlers AutoFac Logging Nhibernate 3.x (+ Fluent) Domain Events Domain Model Repositories Unit of Work Service Agents Backoffice External Database System Service © 2011 Aviva Solutions 25 februari 2012

13. What’s Next? • Nicer Design • WinRT? HTML5? • Query Optimization • Key-Based Commanding • More CQRS • Authentication • Authorization • Globalization • Fluent Migration © 2011 Aviva Solutions Dennis Doomen 25 februari 2012

14. Background Information MVVM, Coroutines, Commanding, Querying, Domain Events, Testable Repository Pattern Example Code, Frameworks Silverlight Cookbook, Caliburn Micro, AutoFac, NHibernate, Fluent NHibernate, Fluent Assertions © 2011 Aviva Solutions 25 februari 2012

Introducing the silverlight cookbook

Recommended

Recommended

More Related Content

What's hot

What's hot (20)

Viewers also liked

Viewers also liked (7)

Similar to Introducing the silverlight cookbook

Similar to Introducing the silverlight cookbook (20)

More from Dennis Doomen

More from Dennis Doomen (20)

Recently uploaded

Recently uploaded (20)

Introducing the silverlight cookbook