This document discusses the principles and structure of Clean Architecture for ASP.NET Core applications. It recommends separating an application into projects for the core domain logic, infrastructure implementation, and user interface. The core project defines interfaces that outer projects implement, avoiding direct dependencies. This allows for independence of frameworks, databases, and user interfaces. The document provides examples of project structure and responsibilities, and resources for further learning clean architecture principles.
There's another talk about Clean Architecture, SOLID, and our approach at InfoJobs. If you need the slides, don't hesitate to fork https://github.com/schibsted-android-training/workshop-5
Introducing Android Architecture
If you would like to view the related sample codes, you can refer to link below:
https://github.com/ZahraHeydari/ArtGallery
2012 the clean architecture by Uncle bob GEORGE LEON
Very interesting 2012 the clean architecture by Uncle Bob
Also go buy the book Clean Architecture: A Craftsman's Guide to Software Structure and Design (Robert C. Martin Series)
There's another talk about Clean Architecture, SOLID, and our approach at InfoJobs. If you need the slides, don't hesitate to fork https://github.com/schibsted-android-training/workshop-5
Introducing Android Architecture
If you would like to view the related sample codes, you can refer to link below:
https://github.com/ZahraHeydari/ArtGallery
2012 the clean architecture by Uncle bob GEORGE LEON
Very interesting 2012 the clean architecture by Uncle Bob
Also go buy the book Clean Architecture: A Craftsman's Guide to Software Structure and Design (Robert C. Martin Series)
SOLID Principles and The Clean ArchitectureMohamed Galal
This presentation is held at @blablaconnect Cairo office, Monday 31 December 2018.
In this presentation we will discuss the following topics:
- SOLID principles.
- Design Pattern vs. Clean Architecture.
- Successful software architecture characteristics.
- The Clean Architecture.
- Real life example.
Learning solid principles using c#
S Single Responsibility Principle
O Open Closed Principle
L Liskovs Substitution Principle
I Interface Segregation Principle
D Dependency Inversion principle
In this session, we’ll discuss the benefits of moving from monolithic to micro-services application architectures, and examine where micro-services can be used. We’ll share common transition strategies and relate them to the specifics of e-commerce and retail workloads, using customer examples. You’ll learn how to build micro-services using AWS services, and get a better understanding of the role of data storage, API endpoints and service discovery. Plus, you can learn from the real-life experience of Digital Goodie, an online retailing platform for connected commerce.
Domain Driven Design main concepts
This presentation is a summary of the book "Domain Driven Design" from InfoQ.
Here is the link: http://www.infoq.com/minibooks/domain-driven-design-quickly
Understanding MicroSERVICE Architecture with Java & Spring BootKashif Ali Siddiqui
This is a deep journey into the realm of "microservice architecture", and in that I will try to cover each inch of it, but with a fixed tech stack of Java with Spring Cloud. Hence in the end, you will be get know each and every aspect of this distributed design, and will develop an understanding of each and every concern regarding distributed system construct.
YouTube Link: https://youtu.be/xuH81XGWeGQ
** Microservices Architecture Training: https://www.edureka.co/microservices-... **
This Edureka's video on Microservices Design Patterns talks about the top design patterns you can use to build applications. In this video, you will learn the following:
1:29 Why do we need Design Patterns?
3:41 What are Design Patterns?
4:28 What are Microservices?
6:00 Principles behind Microservices
10:24 Microservices Design Patterns
Follow us to never miss an update in the future.
YouTube: https://www.youtube.com/user/edurekaIN
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Castbox: https://castbox.fm/networks/505?country=in
Clean Architecture Essentials - Stockholm Software CraftsmanshipIvan Paulovich
About the talk:
Software Architecture is not about picking frameworks then gluing the pieces together! Let's dig into a software implementation designed to support the use cases, we will learn how to make the use cases a standalone component and see how a good architecture allows major decisions to be deferred. We will discuss component coupling and cohesion during the development timeline. Is your application architecture a Web Application? Are your tests taking too long to run? You will learn how to make the delivery mechanism an irrelevant and testable detail.
About the speaker:
Ivan Paulovich is an Agile .NET developer that enjoy solutions based on use cases and decoupled from technology details. Active on GitHub he supports OSS about Domain-Driven Design, TDD, Event Sourcing, CQRS, SOLID and Microservices. Microsoft MVP Reconnect. Checkout @ivanpaulovich on GitHub.
Microservice With Spring Boot and Spring CloudEberhard Wolff
Spring Boot and Spring Cloud are an ideal foundation for creating Microservices based on Java. This presentation explains basic concepts of these libraries.
Commands, events, queries - three types of messages that travel through your application. Some originate from the web, some from the command-line. Your application sends some of them to a database, or a message queue. What is the ideal infrastructure for an application to support this on-going stream of messages? What kind of architectural design fits best?
This talk provides answers to these questions: we take the *hexagonal* approach to software architecture. We look at messages, how they cross boundaries and how you can make steady communication lines between your application and other systems, like web browsers, terminals, databases and message queues. You will learn how to separate the technical aspects of these connections from the core behavior of your application by implementing design patterns like the *command bus*, and design principles like *dependency inversion*.
Hugtakið hugbúnaðararkítektúr er yfirhlaðið orð og þýðir mismunandi hluti fyrir mismunandi fólk. Við ætlum í þessum fyrirlestri að skilgreina ýmis hugtök tengd arkítektúr til að fá betri skilning á þessu. Við munum einnig skilgreina hvað agile arkítektúr þýðir eða hvað það þýðir ekki. Þá skoðum við monolith arkítektúr sem er hinn hefðbundi arkítektúr sem flestir nota í dag. Vandinn er sá að í dag eru kröfurnar meiri en þessi arkítektúr ræður við og því hafa menn verið að skoða aðrar leiðir eins og lightweight Service Oriented Architecture og hvernig smíða má hugbúnað sem þjónustur eða microapps eða microservice.
Við skoðum einnig lagskiptingu en það er elsta trikkið í bókinni og byggir á deila og drottna aðferðinni.
SOLID Principles and The Clean ArchitectureMohamed Galal
This presentation is held at @blablaconnect Cairo office, Monday 31 December 2018.
In this presentation we will discuss the following topics:
- SOLID principles.
- Design Pattern vs. Clean Architecture.
- Successful software architecture characteristics.
- The Clean Architecture.
- Real life example.
Learning solid principles using c#
S Single Responsibility Principle
O Open Closed Principle
L Liskovs Substitution Principle
I Interface Segregation Principle
D Dependency Inversion principle
In this session, we’ll discuss the benefits of moving from monolithic to micro-services application architectures, and examine where micro-services can be used. We’ll share common transition strategies and relate them to the specifics of e-commerce and retail workloads, using customer examples. You’ll learn how to build micro-services using AWS services, and get a better understanding of the role of data storage, API endpoints and service discovery. Plus, you can learn from the real-life experience of Digital Goodie, an online retailing platform for connected commerce.
Domain Driven Design main concepts
This presentation is a summary of the book "Domain Driven Design" from InfoQ.
Here is the link: http://www.infoq.com/minibooks/domain-driven-design-quickly
Understanding MicroSERVICE Architecture with Java & Spring BootKashif Ali Siddiqui
This is a deep journey into the realm of "microservice architecture", and in that I will try to cover each inch of it, but with a fixed tech stack of Java with Spring Cloud. Hence in the end, you will be get know each and every aspect of this distributed design, and will develop an understanding of each and every concern regarding distributed system construct.
YouTube Link: https://youtu.be/xuH81XGWeGQ
** Microservices Architecture Training: https://www.edureka.co/microservices-... **
This Edureka's video on Microservices Design Patterns talks about the top design patterns you can use to build applications. In this video, you will learn the following:
1:29 Why do we need Design Patterns?
3:41 What are Design Patterns?
4:28 What are Microservices?
6:00 Principles behind Microservices
10:24 Microservices Design Patterns
Follow us to never miss an update in the future.
YouTube: https://www.youtube.com/user/edurekaIN
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Castbox: https://castbox.fm/networks/505?country=in
Clean Architecture Essentials - Stockholm Software CraftsmanshipIvan Paulovich
About the talk:
Software Architecture is not about picking frameworks then gluing the pieces together! Let's dig into a software implementation designed to support the use cases, we will learn how to make the use cases a standalone component and see how a good architecture allows major decisions to be deferred. We will discuss component coupling and cohesion during the development timeline. Is your application architecture a Web Application? Are your tests taking too long to run? You will learn how to make the delivery mechanism an irrelevant and testable detail.
About the speaker:
Ivan Paulovich is an Agile .NET developer that enjoy solutions based on use cases and decoupled from technology details. Active on GitHub he supports OSS about Domain-Driven Design, TDD, Event Sourcing, CQRS, SOLID and Microservices. Microsoft MVP Reconnect. Checkout @ivanpaulovich on GitHub.
Microservice With Spring Boot and Spring CloudEberhard Wolff
Spring Boot and Spring Cloud are an ideal foundation for creating Microservices based on Java. This presentation explains basic concepts of these libraries.
Commands, events, queries - three types of messages that travel through your application. Some originate from the web, some from the command-line. Your application sends some of them to a database, or a message queue. What is the ideal infrastructure for an application to support this on-going stream of messages? What kind of architectural design fits best?
This talk provides answers to these questions: we take the *hexagonal* approach to software architecture. We look at messages, how they cross boundaries and how you can make steady communication lines between your application and other systems, like web browsers, terminals, databases and message queues. You will learn how to separate the technical aspects of these connections from the core behavior of your application by implementing design patterns like the *command bus*, and design principles like *dependency inversion*.
Hugtakið hugbúnaðararkítektúr er yfirhlaðið orð og þýðir mismunandi hluti fyrir mismunandi fólk. Við ætlum í þessum fyrirlestri að skilgreina ýmis hugtök tengd arkítektúr til að fá betri skilning á þessu. Við munum einnig skilgreina hvað agile arkítektúr þýðir eða hvað það þýðir ekki. Þá skoðum við monolith arkítektúr sem er hinn hefðbundi arkítektúr sem flestir nota í dag. Vandinn er sá að í dag eru kröfurnar meiri en þessi arkítektúr ræður við og því hafa menn verið að skoða aðrar leiðir eins og lightweight Service Oriented Architecture og hvernig smíða má hugbúnað sem þjónustur eða microapps eða microservice.
Við skoðum einnig lagskiptingu en það er elsta trikkið í bókinni og byggir á deila og drottna aðferðinni.
Clean architecture with asp.net core by ArdalisSteven Smith
Clean Architecture with ASP.NET Core
ASP.NET Core provides better support for clean, testable, maintainable architectures than any of its predecessors. Learn the underlying principles that apply to project/solution organization, how best to arrange your projects to support clean code, and how to refactor existing solutions toward this architecture. Examples will use ASP.NET Core but the principles covered apply to all languages and platforms.
About Steve
Steve Smith (@ardalis) is an entrepreneur and software developer with a passion for building quality software as effectively as possible. Steve has published several courses on Pluralsight, covering DDD, SOLID, design patterns, and software architecture. He’s a Microsoft ASP.NET MVP and Insider, a frequent speaker at developer conferences, an author, and a trainer. Steve works with companies that want to avoid the trap of technical debt by helping their teams deliver quality software, quickly. Steve and his team have been described by clients as a “force multiplier”, amplifying the value of existing development teams. Steve’s client list includes Microsoft, Quicken Loans, Celina Insurance, and many other satisfied customers.
Software Architecture for Agile DevelopmentHayim Makabee
Slides of a workshop given at Herzliya on June/2017, organized by ILTAM and IASA Israel. This workshop was dedicated to the topic of Software Architecture in the context of Agile Development. We answered the question: “How much Design Up Front should be done in an Agile project?” Hayim presented his approach of Adaptable Design Up Front (ADUF), describing its rationale, applications in practice and comparison to other approaches such as Emergent Design. He explained why adaptability is essential for the development of complex software systems using Agile methods. The concepts were illustrated through practical software architecture approaches such as micro-services and examples of real software systems that were developed in the past. The workshop also included an exercise on the definition and evolution of the design of an interesting system.
Best practices for creating modular Web applicationspeychevi
In the talk we are discussing the best practices for creating modular Web applications. The talk focuses on practical advices and proven in the time methodologies for creating supportable and maintainable applications.
Dairy management system project report..pdfKamal Acharya
ASP.NET is the next version of Active Server Pages (ASP); it is a unified Web development platform that provides the services necessary for developers to build enterprise-class Web applications. While ASP.NET is largely syntax compatible, it also provides a new programming model and infrastructure for more secure, scalable, and stable applications. ASP.NET is a compiled, NET-based environment, we can author applications in any .NET compatible language, including Visual Basic .NET, C#, and JScript .NET. Additionally, the entire .NET Framework is available to any ASP.NET application. Developers can easily access the benefits of these technologies, which include the managed common language runtime environment (CLR), type safety, inheritance, and so on. ASP.NET has been designed to work seamlessly with WYSIWYG HTML editors and other programming tools, including Microsoft Visual Studio .NET. Not only does this make Web development easier, but it also provides all the benefits that these tools have to offer, including a GUI that developers can use to drop server controls onto a Web page and fully integrated debugging support.
Actively looking for an opportunity to work as a challenging Dot Net DeveloperKarthik Reddy
The .Net Developer designs, modifies, develops, writes and implements software programming applications and components. Supports and/or installs software applications and components. Works from written specifications and pre-established guidelines to perform the functions of the job and maintains documentation of process flow.
Actively looking for an opportunity to work as a challenging Dot Net DeveloperKarthik Reddy
The .Net Developer designs, modifies, develops, writes and implements software programming applications and components. Supports and/or installs software applications and components. Works from written specifications and pre-established guidelines to perform the functions of the job and maintains documentation of process flow.
Unleash Unlimited Potential with One-Time Purchase
BoxLang is more than just a language; it's a community. By choosing a Visionary License, you're not just investing in your success, you're actively contributing to the ongoing development and support of BoxLang.
Multiple Your Crypto Portfolio with the Innovative Features of Advanced Crypt...Hivelance Technology
Cryptocurrency trading bots are computer programs designed to automate buying, selling, and managing cryptocurrency transactions. These bots utilize advanced algorithms and machine learning techniques to analyze market data, identify trading opportunities, and execute trades on behalf of their users. By automating the decision-making process, crypto trading bots can react to market changes faster than human traders
Hivelance, a leading provider of cryptocurrency trading bot development services, stands out as the premier choice for crypto traders and developers. Hivelance boasts a team of seasoned cryptocurrency experts and software engineers who deeply understand the crypto market and the latest trends in automated trading, Hivelance leverages the latest technologies and tools in the industry, including advanced AI and machine learning algorithms, to create highly efficient and adaptable crypto trading bots
Strategies for Successful Data Migration Tools.pptxvarshanayak241
Data migration is a complex but essential task for organizations aiming to modernize their IT infrastructure and leverage new technologies. By understanding common challenges and implementing these strategies, businesses can achieve a successful migration with minimal disruption. Data Migration Tool like Ask On Data play a pivotal role in this journey, offering features that streamline the process, ensure data integrity, and maintain security. With the right approach and tools, organizations can turn the challenge of data migration into an opportunity for growth and innovation.
Enhancing Research Orchestration Capabilities at ORNL.pdfGlobus
Cross-facility research orchestration comes with ever-changing constraints regarding the availability and suitability of various compute and data resources. In short, a flexible data and processing fabric is needed to enable the dynamic redirection of data and compute tasks throughout the lifecycle of an experiment. In this talk, we illustrate how we easily leveraged Globus services to instrument the ACE research testbed at the Oak Ridge Leadership Computing Facility with flexible data and task orchestration capabilities.
Developing Distributed High-performance Computing Capabilities of an Open Sci...Globus
COVID-19 had an unprecedented impact on scientific collaboration. The pandemic and its broad response from the scientific community has forged new relationships among public health practitioners, mathematical modelers, and scientific computing specialists, while revealing critical gaps in exploiting advanced computing systems to support urgent decision making. Informed by our team’s work in applying high-performance computing in support of public health decision makers during the COVID-19 pandemic, we present how Globus technologies are enabling the development of an open science platform for robust epidemic analysis, with the goal of collaborative, secure, distributed, on-demand, and fast time-to-solution analyses to support public health.
Your Digital Assistant.
Making complex approach simple. Straightforward process saves time. No more waiting to connect with people that matter to you. Safety first is not a cliché - Securely protect information in cloud storage to prevent any third party from accessing data.
Would you rather make your visitors feel burdened by making them wait? Or choose VizMan for a stress-free experience? VizMan is an automated visitor management system that works for any industries not limited to factories, societies, government institutes, and warehouses. A new age contactless way of logging information of visitors, employees, packages, and vehicles. VizMan is a digital logbook so it deters unnecessary use of paper or space since there is no requirement of bundles of registers that is left to collect dust in a corner of a room. Visitor’s essential details, helps in scheduling meetings for visitors and employees, and assists in supervising the attendance of the employees. With VizMan, visitors don’t need to wait for hours in long queues. VizMan handles visitors with the value they deserve because we know time is important to you.
Feasible Features
One Subscription, Four Modules – Admin, Employee, Receptionist, and Gatekeeper ensures confidentiality and prevents data from being manipulated
User Friendly – can be easily used on Android, iOS, and Web Interface
Multiple Accessibility – Log in through any device from any place at any time
One app for all industries – a Visitor Management System that works for any organisation.
Stress-free Sign-up
Visitor is registered and checked-in by the Receptionist
Host gets a notification, where they opt to Approve the meeting
Host notifies the Receptionist of the end of the meeting
Visitor is checked-out by the Receptionist
Host enters notes and remarks of the meeting
Customizable Components
Scheduling Meetings – Host can invite visitors for meetings and also approve, reject and reschedule meetings
Single/Bulk invites – Invitations can be sent individually to a visitor or collectively to many visitors
VIP Visitors – Additional security of data for VIP visitors to avoid misuse of information
Courier Management – Keeps a check on deliveries like commodities being delivered in and out of establishments
Alerts & Notifications – Get notified on SMS, email, and application
Parking Management – Manage availability of parking space
Individual log-in – Every user has their own log-in id
Visitor/Meeting Analytics – Evaluate notes and remarks of the meeting stored in the system
Visitor Management System is a secure and user friendly database manager that records, filters, tracks the visitors to your organization.
"Secure Your Premises with VizMan (VMS) – Get It Now"
Listen to the keynote address and hear about the latest developments from Rachana Ananthakrishnan and Ian Foster who review the updates to the Globus Platform and Service, and the relevance of Globus to the scientific community as an automation platform to accelerate scientific discovery.
Software Engineering, Software Consulting, Tech Lead.
Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Security,
Spring Transaction, Spring MVC,
Log4j, REST/SOAP WEB-SERVICES.
OpenFOAM solver for Helmholtz equation, helmholtzFoam / helmholtzBubbleFoamtakuyayamamoto1800
In this slide, we show the simulation example and the way to compile this solver.
In this solver, the Helmholtz equation can be solved by helmholtzFoam. Also, the Helmholtz equation with uniformly dispersed bubbles can be simulated by helmholtzBubbleFoam.
Quarkus Hidden and Forbidden ExtensionsMax Andersen
Quarkus has a vast extension ecosystem and is known for its subsonic and subatomic feature set. Some of these features are not as well known, and some extensions are less talked about, but that does not make them less interesting - quite the opposite.
Come join this talk to see some tips and tricks for using Quarkus and some of the lesser known features, extensions and development techniques.
Providing Globus Services to Users of JASMIN for Environmental Data AnalysisGlobus
JASMIN is the UK’s high-performance data analysis platform for environmental science, operated by STFC on behalf of the UK Natural Environment Research Council (NERC). In addition to its role in hosting the CEDA Archive (NERC’s long-term repository for climate, atmospheric science & Earth observation data in the UK), JASMIN provides a collaborative platform to a community of around 2,000 scientists in the UK and beyond, providing nearly 400 environmental science projects with working space, compute resources and tools to facilitate their work. High-performance data transfer into and out of JASMIN has always been a key feature, with many scientists bringing model outputs from supercomputers elsewhere in the UK, to analyse against observational or other model data in the CEDA Archive. A growing number of JASMIN users are now realising the benefits of using the Globus service to provide reliable and efficient data movement and other tasks in this and other contexts. Further use cases involve long-distance (intercontinental) transfers to and from JASMIN, and collecting results from a mobile atmospheric radar system, pushing data to JASMIN via a lightweight Globus deployment. We provide details of how Globus fits into our current infrastructure, our experience of the recent migration to GCSv5.4, and of our interest in developing use of the wider ecosystem of Globus services for the benefit of our user community.
Cyaniclab : Software Development Agency Portfolio.pdfCyanic lab
CyanicLab, an offshore custom software development company based in Sweden,India, Finland, is your go-to partner for startup development and innovative web design solutions. Our expert team specializes in crafting cutting-edge software tailored to meet the unique needs of startups and established enterprises alike. From conceptualization to execution, we offer comprehensive services including web and mobile app development, UI/UX design, and ongoing software maintenance. Ready to elevate your business? Contact CyanicLab today and let us propel your vision to success with our top-notch IT solutions.
Modern design is crucial in today's digital environment, and this is especially true for SharePoint intranets. The design of these digital hubs is critical to user engagement and productivity enhancement. They are the cornerstone of internal collaboration and interaction within enterprises.
Gamify Your Mind; The Secret Sauce to Delivering Success, Continuously Improv...Shahin Sheidaei
Games are powerful teaching tools, fostering hands-on engagement and fun. But they require careful consideration to succeed. Join me to explore factors in running and selecting games, ensuring they serve as effective teaching tools. Learn to maintain focus on learning objectives while playing, and how to measure the ROI of gaming in education. Discover strategies for pitching gaming to leadership. This session offers insights, tips, and examples for coaches, team leads, and enterprise leaders seeking to teach from simple to complex concepts.
Innovating Inference - Remote Triggering of Large Language Models on HPC Clus...Globus
Large Language Models (LLMs) are currently the center of attention in the tech world, particularly for their potential to advance research. In this presentation, we'll explore a straightforward and effective method for quickly initiating inference runs on supercomputers using the vLLM tool with Globus Compute, specifically on the Polaris system at ALCF. We'll begin by briefly discussing the popularity and applications of LLMs in various fields. Following this, we will introduce the vLLM tool, and explain how it integrates with Globus Compute to efficiently manage LLM operations on Polaris. Attendees will learn the practical aspects of setting up and remotely triggering LLMs from local machines, focusing on ease of use and efficiency. This talk is ideal for researchers and practitioners looking to leverage the power of LLMs in their work, offering a clear guide to harnessing supercomputing resources for quick and effective LLM inference.
We describe the deployment and use of Globus Compute for remote computation. This content is aimed at researchers who wish to compute on remote resources using a unified programming interface, as well as system administrators who will deploy and operate Globus Compute services on their research computing infrastructure.
Code reviews are vital for ensuring good code quality. They serve as one of our last lines of defense against bugs and subpar code reaching production.
Yet, they often turn into annoying tasks riddled with frustration, hostility, unclear feedback and lack of standards. How can we improve this crucial process?
In this session we will cover:
- The Art of Effective Code Reviews
- Streamlining the Review Process
- Elevating Reviews with Automated Tools
By the end of this presentation, you'll have the knowledge on how to organize and improve your code review proces
Prosigns: Transforming Business with Tailored Technology SolutionsProsigns
Unlocking Business Potential: Tailored Technology Solutions by Prosigns
Discover how Prosigns, a leading technology solutions provider, partners with businesses to drive innovation and success. Our presentation showcases our comprehensive range of services, including custom software development, web and mobile app development, AI & ML solutions, blockchain integration, DevOps services, and Microsoft Dynamics 365 support.
Custom Software Development: Prosigns specializes in creating bespoke software solutions that cater to your unique business needs. Our team of experts works closely with you to understand your requirements and deliver tailor-made software that enhances efficiency and drives growth.
Web and Mobile App Development: From responsive websites to intuitive mobile applications, Prosigns develops cutting-edge solutions that engage users and deliver seamless experiences across devices.
AI & ML Solutions: Harnessing the power of Artificial Intelligence and Machine Learning, Prosigns provides smart solutions that automate processes, provide valuable insights, and drive informed decision-making.
Blockchain Integration: Prosigns offers comprehensive blockchain solutions, including development, integration, and consulting services, enabling businesses to leverage blockchain technology for enhanced security, transparency, and efficiency.
DevOps Services: Prosigns' DevOps services streamline development and operations processes, ensuring faster and more reliable software delivery through automation and continuous integration.
Microsoft Dynamics 365 Support: Prosigns provides comprehensive support and maintenance services for Microsoft Dynamics 365, ensuring your system is always up-to-date, secure, and running smoothly.
Learn how our collaborative approach and dedication to excellence help businesses achieve their goals and stay ahead in today's digital landscape. From concept to deployment, Prosigns is your trusted partner for transforming ideas into reality and unlocking the full potential of your business.
Join us on a journey of innovation and growth. Let's partner for success with Prosigns.
2. Learn More After Today
1) Pluralsight
◦ N-Tier Apps with C# http://bit.ly/PS-NTier1
◦ Domain-Driven Design Fundamentals http://bit.ly/ddd-fundamentals
2) DevIQ
◦ ASP.NET Core Quick Start http://aspnetcorequickstart.com
3) Microsoft FREE eBook/Sample App
◦ eShopOnWeb eCommerce Sample https://ardalis.com/architecture-ebook
4) Contact me for mentoring/training for your company/team
12. Separation of Concerns
Avoid mixing different code responsibilities in the
same (method | class | project)
The Big Three™
Data Access
Business Rules and Domain Model
User Interface
15. Single Responsibility
Works in tandem with Separation of Concerns
Classes should focus on a single responsibility – a
single reason to change.
16.
17. Following Don’t Repeat Yourself…
Refactor repetitive code into functions
Group functions into cohesive classes
Group classes into folders and namespaces by
Responsibility
Level of abstraction
Etc.
Further group class folders into projects
20. Invert (and inject) Dependencies
Both high level classes and implementation-detail classes should
depend on abstractions (interfaces).
21. Invert (and inject) Dependencies
Classes should follow Explicit Dependencies Principle:
Request all dependencies via their constructor
Make your types honest, not deceptive
22. Invert (and inject) Dependencies
Corollary: Abstractions/interfaces must be defined somewhere accessible by:
Low level implementation services
High level business services
User interface entry points
23. Make the right thing easy
and the wrong thing hard.
FORCE DEVELOPERS INTO A “PIT OF SUCCESS”
24. Make the right thing easy and the wrong thing hard.
UI classes shouldn’t depend directly on infrastructure classes
◦ How can we structure our solution to help enforce this?
25. Make the right thing easy and the wrong thing hard.
Business/domain classes shouldn’t depend on infrastructure classes
◦ How can our solution design help?
26. Make the right thing easy and the wrong thing hard.
Repetition of (query logic, validation logic, policies, error handling, anything) is a problem
◦ What patterns can we apply to make avoiding repetition easier
than copy/pasting?
33. Domain Model
Not just business logic, but also:
A model of the problem space composed of Entities, Interfaces, Services, and
more.
Interfaces define contracts for working with domain objects
Everything in the application (including infrastructure and data access) depends
on these interfaces and domain objects
43. Clean Architecture Features
Framework Independent
◦ You can use this architecture with ASP.NET (Core), Java, Python, etc.
◦ It doesn’t rely on any software library or proprietary codebase.
44. Clean Architecture Features
Database Independent
◦ The vast majority of the code has no knowledge of persistence details.
◦ This knowledge may exist in just one class, in one project that no other project references.
45. Clean Architecture Features
UI Independent
◦ Only the UI project cares about the UI.
◦ The rest of the system is UI-agnostic.
47. Refactoring to a Clean Architecture
Best to start from a properly organized solution
◦ See http://github.com/ardalis/CleanArchitecture
Next-best: Start from an application consisting of just a single project
Most difficult: Large, existing investment in multi-layer architecture without
abstractions or DI
48. The Core Project
Minimal dependencies – none on Infrastructure.
What Goes in Core:
Interfaces
Entities Value Objects Aggregates
Domain
Services
Domain Events
Exceptions
Specifications
Event Handlers
49. The Infrastructure Project
All dependencies on out-of-process resources.
What Goes in Infrastructure:
Repositories
EF (Core)
DbContext
Web API
Clients
File System
Accessors
Email/SMS
Sending
Logging
Adapters
System Clock
Other
Services
Cached
Repositories
Interfaces
50. The Web Project
All dependencies on out-of-process resources.
What Goes in Web:
Controllers Views
ViewModels
Filters Binders
Other Services
Razor
Pages
ApiModels BindingModels
Tag/Html
Helpers
Or
Interfaces
51. Sharing Between Solutions:
Shared Kernel
Common Types May Be Shared Between Solutions. Will be referenced by Core project(s).
Ideally distributed as Nuget Packages.
What Goes in Shared Kernel:
Base Entity
Base Domain
Event
Base
Specification
Common
Exceptions
Common
Interfaces
Common Auth
e.g. User class
Common DI
Common
Logging
Common
Guard Clauses
52. Guard Clauses?
Simple checks for input that use common rules and exceptions.
Nuget Package: Ardalis.GuardClauses (https://github.com/ardalis/GuardClauses)
Example:
public void ProcessOrder(Order order)
{
Guard.Against.Null(order, nameof(order));
// process order here
}
53. Solution Structure – Clean Architecture
Web
Core
Infrastructure
Shared Kernel
Unit Tests
Functional
Tests
Integration
Tests
55. What belongs in actions/handlers?
Controller Actions (or Page Handlers) should:
1) Accept task-specific types (ViewModel, ApiModel, BindingModel)
2) Perform and handle model validation (ideally w/filters)
3) “Do Work” (More on this in a moment)
4) Create any model type required for response (ViewModel, ApiModel, etc.)
5) Return an appropriate Result type (View, Page, Ok, NotFound, etc.)
56. “Do Work” – Option One
Repositories and Entities
1) Get entity from an injected Repository
2) Work with the entity and its methods.
3) Update the entity’s state using the Repository
Great for simple operations
Great for CRUD work
Requires mapping between web models and domain model within controller
57.
58. “Do Work” – Option Two
Work with an application service.
1) Pass ApiModel types to service
2) Service internally works with repositories and domain model types.
3) Service returns a web model type
Better for more complex operations
Application Service is responsible for mapping between web models and domain model.
Keeps controllers lightweight, and with fewer injected dependencies.
59.
60. “Do Work” – Option Three
Work with commands and a tool like Mediatr.
1) Use ApiModel types that represent commands (e.g. RegisterUser)
2) Send model-bound instance of command to handler using _mediator.Send()
No need to inject separate services to different controllers – Mediatr becomes only dependency.