. Net cloud native architect training camp (rgca four step architecture method) -- learning notes

RGCA

• Requirement： Capture needs from stakeholders
• Goal： Translate requirements into goals （ Functional intention ）
• Concept： Expand the goal into a complete concept
• Architecture： Extend the concept to architecture

Catalog

• Capture needs from stakeholders
• Translate requirements into goals
• Expand the goal into a complete concept

Capture needs from stakeholders

• What types of stakeholders
• Stakeholder needs
• Requirements classification and sequencing
• Characteristics of requirements

What types of stakeholders

Stakeholders	Focus on the things and objects of the system	-
Investor	Stakeholders who help solve the problem	Investor Microsoft 、 Microsoft shareholders, etc
Beneficiary	Stakeholders who benefit from the system	Customer 、 The programmer
Customer	Interested parties of ordering system or purchasing and selling system	Use ASP .NET Core Develop the organization that should
user	Stakeholders who directly operate and use the system	C# The programmer
supplier	Development 、 Support and manage stakeholders in the system or product

Stakeholder needs

Stakeholders	Investor Microsoft 、 Microsoft shareholders, etc	-
Beneficiary	investors	Attract... Through the frame C# developer , For development tools VisualStudio and Azure The cloud brings income
Customer	Use ASP .NET Core An organization that develops applications	Low cost , Develop high quality 、 Reliable products generate revenue ; It can be developed quickly WEB Applications
user	C# The programmer	Provide as much basic function support as possible （ Log function 、 Configuration functions 、 Safety side function ）; Provide the best possible performance support ; Support deployment through containers
supplier	-	Integrate EF Core

Requirements classification and sequencing

classification	-
Overall will	Attract... Through the frame C# developer , For development tools VisualStudio and Azure The cloud brings income
Overall will	Improve developer efficiency through the framework 、 cost reduction 、 Develop high quality 、 Reliable products generate revenue
necessity	It can be developed quickly WEB Applications
A desire for missing items	Provide as much basic function support as possible （ Log function 、 Configuration functions 、 Safety side function ）
	Provide as much performance support as possible
	Support running on different operating system platforms
	Support deployment through containers

Characteristics of requirements

classification	-	Benefit intensity	harm	Degree of emphasis	Coupling degree	Choice ability	KANO classification
Overall will	Attract... Through the frame C# developer , For development tools VisualStudio and Azure The cloud brings income
Overall will	Improve developer efficiency through the framework 、 cost reduction 、 Develop high quality 、 Reliable products generate revenue
necessity	It can be developed quickly WEB Applications
A desire for missing items	Provide as much basic function support as possible （ Log function 、 Configuration functions 、 Safety side function ）
	Provide as much performance support as possible
	Support running on different operating system platforms
	Support deployment through containers

KANO classification ： Basic type ; Expectation type ; Excited ; No difference ; Reverse type

Translate requirements into goals

To...By...Using

in order to ... adopt ... Use

ASP .NET Core： In order to output the response information to the request simply and conveniently , Create the response content by writing a piece of code , Use ASP .NET Core

Objective statement

-	ASP .NET Core
Solution independent operands	Network request
Interest related attributes	Response body
Solution independent process	change
The properties of the process	Simplicity

Expand the goal into a complete concept

• The specialization of extended concepts
• Enlarge the concept downward
• The upward integration of extended concepts

The specialization of extended concepts

-	ASP .NET Core
Solution independent operands	Network request
Interest related attributes	Response body
Solution independent process	change
The properties of the process	Simplicity
Solution related operational objects	HTTP request ;WebSocket request ;Grpc request

Enlarge the concept downward

Concept	Concept description	Irrelevant operation object	Stakeholder attributes	Unrelated process
monitor	In order to receive network requests for a long time , By continuously listening to the port on the server , When there is a request to enter, it can be processed . Use a network listener	Original network request	state	Establishing a connection
analysis	In order to allow programmers to write code that can easily access information in network requests , Through the protocol format conversion of the original network request , Use a protocol parser	Original network request	Format	transformation
Handle	-	Request response body	Content	write in
return	-	Original network request	Format	transformation

The upward integration of extended concepts