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Questions and Answers
What is the primary focus of this guide?
What is the primary focus of this guide?
Which technology does this guide specifically focus on in conjunction with .NET?
Which technology does this guide specifically focus on in conjunction with .NET?
Who is the intended audience for this guide?
Who is the intended audience for this guide?
Which version of .NET does this guide cover?
Which version of .NET does this guide cover?
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What aspect of application development does this guide specifically avoid covering?
What aspect of application development does this guide specifically avoid covering?
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What is the next recommended step after studying this guide?
What is the next recommended step after studying this guide?
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What does the guide primarily provide for.NET developers?
What does the guide primarily provide for.NET developers?
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Which complementary guide focuses on lifecycle management of containerized applications?
Which complementary guide focuses on lifecycle management of containerized applications?
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What is a primary advantage of using .NET 7 in a microservices-oriented system?
What is a primary advantage of using .NET 7 in a microservices-oriented system?
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Which feature of ASP.NET Core enhances its performance compared to traditional .NET Framework?
Which feature of ASP.NET Core enhances its performance compared to traditional .NET Framework?
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What design principle does a microservice architecture advocate for?
What design principle does a microservice architecture advocate for?
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When is .NET Framework considered a suitable choice?
When is .NET Framework considered a suitable choice?
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What is one of the benefits of using Docker containers in application deployment?
What is one of the benefits of using Docker containers in application deployment?
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What allows a microservices architecture to effectively mix technologies across service boundaries?
What allows a microservices architecture to effectively mix technologies across service boundaries?
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What is a benefit of using ASP.NET Core images for microservices on Linux or Windows Nano?
What is a benefit of using ASP.NET Core images for microservices on Linux or Windows Nano?
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Why is it important for microservices to have a small Bounded Context?
Why is it important for microservices to have a small Bounded Context?
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What is a key advantage of using Windows Nano Server for .NET 7 applications?
What is a key advantage of using Windows Nano Server for .NET 7 applications?
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Which of the following Linux distributions is NOT mentioned as supported for .NET 7 applications?
Which of the following Linux distributions is NOT mentioned as supported for .NET 7 applications?
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What is the purpose of adding an image name to a Dockerfile?
What is the purpose of adding an image name to a Dockerfile?
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Which repository contains .NET SDK images and other .NET versions?
Which repository contains .NET SDK images and other .NET versions?
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What optimization focus was adopted by Microsoft for Docker images used in development?
What optimization focus was adopted by Microsoft for Docker images used in development?
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When using the image mcr.microsoft.com/dotnet/aspnet:7.0-, what does the suffix '-slim' indicate?
When using the image mcr.microsoft.com/dotnet/aspnet:7.0-, what does the suffix '-slim' indicate?
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Which of the following describes the image repository structure for .NET versions?
Which of the following describes the image repository structure for .NET versions?
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Which image supports ASP.NET Core 7.0 multi-architecture?
Which image supports ASP.NET Core 7.0 multi-architecture?
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What does the ENTRYPOINT definition in a Dockerfile specify?
What does the ENTRYPOINT definition in a Dockerfile specify?
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What happens when a long-running process within a container fails?
What happens when a long-running process within a container fails?
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How can multiple processes be run within a single container?
How can multiple processes be run within a single container?
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What is the primary reason for containerizing a monolithic application?
What is the primary reason for containerizing a monolithic application?
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In a batch job scenario, when is the work considered complete?
In a batch job scenario, when is the work considered complete?
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What is a potential downside of running multiple processes in a single container?
What is a potential downside of running multiple processes in a single container?
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What does the term 'scale out' refer to in containerization?
What does the term 'scale out' refer to in containerization?
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Which of the following is commonly NOT used when designing containers?
Which of the following is commonly NOT used when designing containers?
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What can you do if a platform does not support .NET 7?
What can you do if a platform does not support .NET 7?
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What is a major advantage of .NET Core over .NET Framework?
What is a major advantage of .NET Core over .NET Framework?
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Which scenario requires Linux-based Docker hosts?
Which scenario requires Linux-based Docker hosts?
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What is the recommended approach when extending an existing application that uses the traditional .NET Framework?
What is the recommended approach when extending an existing application that uses the traditional .NET Framework?
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Which .NET Standard version allows for the most significant API surface compatibility across different frameworks?
Which .NET Standard version allows for the most significant API surface compatibility across different frameworks?
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Why might some Azure services not support .NET 7 yet?
Why might some Azure services not support .NET 7 yet?
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What must be considered if certain NuGet packages are critical for an application but require Windows to run?
What must be considered if certain NuGet packages are critical for an application but require Windows to run?
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What must be considered when deciding on a Docker host for development machines?
What must be considered when deciding on a Docker host for development machines?
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Which of the following technologies is NOT available in .NET 7?
Which of the following technologies is NOT available in .NET 7?
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Which of the following resources is NOT listed for further reading about .NET?
Which of the following resources is NOT listed for further reading about .NET?
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How does the Windows Compatibility Pack assist .NET developers?
How does the Windows Compatibility Pack assist .NET developers?
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When converting an existing ASP.NET application to .NET 7, what should be referred to?
When converting an existing ASP.NET application to .NET 7, what should be referred to?
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Which statement accurately describes third-party .NET libraries in relation to .NET Standard?
Which statement accurately describes third-party .NET libraries in relation to .NET Standard?
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What is true about the available Azure SDKs for .NET 7?
What is true about the available Azure SDKs for .NET 7?
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Why might certain .NET Framework technologies never be available in .NET 7?
Why might certain .NET Framework technologies never be available in .NET 7?
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What is a major limitation when migrating to .NET Core versions from the traditional .NET Framework?
What is a major limitation when migrating to .NET Core versions from the traditional .NET Framework?
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Study Notes
Foundational Development and Architectural Guidance
- This guide focuses on development environment level guidance for Docker and .NET, omitting infrastructure specifics (cloud/on-premises).
- Decisions about infrastructure are for later in the production application creation stage.
- The guide is infrastructure-agnostic but development-centric. The next step is learning about production-ready microservices on Microsoft Azure.
- Updated to cover .NET 7 and aligning with Azure and relevant third-party technologies.
.NET 7 and Microservices
- .NET 7 is ideal for microservices-based containerized systems due to its lightweight nature and lean container images.
- Microservices should be small, light, and fast-initiating to have a small footprint, small Bounded Context, representation of small areas of concern, quick start/stop capability.
- Use .NET 7 for new microservices that can co-exist with other services built with different technologies (Node.js, Python, Java, GoLang).
- Deploying high density requires .NET and ASP.NET Core for optimum speed and performance (10x faster than ASP.NET).
.NET Framework Considerations
- .NET Framework remains suitable for existing applications, especially during migration.
- Migrating existing applications need not be to .NET. 7, where Docker containers with .NET Framework can be used.
- Extending existing applications can use .NET 7 for new services in ASP.NET Core format.
- Most third-party libraries are compatible with .NET Standard, enabling code sharing across .NET versions.
Technologies Not in .NET 7
- ASP.NET Web Forms
- Workflow-related services (Windows Workflow Foundation, Workflow Services, WCF Data Services).
- Other features may follow in future .NET releases.
Supporting Platforms and APIs
- Some Microsoft and third-party platforms might not fully support.NET 7 yet.
- Migrate to .NET via steps outlined in appropriate resources.
Docker Images and Implementations
- Development and Production Docker Images: Microsoft optimizes images for development contexts.
- For development, container images act as process boundary units, scaled and batched for ease of process management.
- Dockerfiles implement ENTRYPOINT (single process per container, which ends container lifecycle)
- A script or tool like Supervisor may be used for launching multiple programs within a container if required.
Monolithic Application Containerization
- Monolithic applications can be containerized for simpler deployment, isolated testing, and dependence mitigation.
- One container per monolithic application is managed, scaled as needed (e.g., load balancers for multiple instances).
Official .NET Docker Images
- Microsoft creates and optimizes official .NET Docker images.
- Search across the Microsoft Artifact Registry for .NET image repositories based on framework versions and the OS (Linux, Windows).
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Description
Explore the foundational development guidance for building microservices with .NET 7. This guide emphasizes a development-centric approach while remaining infrastructure-agnostic, preparing you for production-ready applications on Microsoft Azure. Dive into the advantages of using .NET 7 for lightweight, efficient microservices.
