. Net core + DDD basic layering + project basic framework + personal summary "suggestions collection"

Hello everyone , I'm wang Jun , An architect who can write code and recite poetry . Let's talk about it today .Net Core + DDD Foundation layering + Basic framework of the project + Personal summary 「 Recommended collection 」, I hope it can help you make progress !!!

Why write this article

1, More than half a year ago , The company's development task is relatively easy , I don't know what to do , But want to learn technology , More confused , Later, I came into contact with the blog Garden , Read a post , that , I didn't know what to learn , So I gave him the information , He actually replied to me , And also give me suggestions on the direction of learning , And the method of learning , I am very grateful to him .

2, In an interview , Someone asked me. , Your work 1 Have you ever made a self summary for more than years , What do you think your strengths are , I answered haltingly , My heart is very flustered , Here is a summary .

3, Studied for a while .Net Core 了 , Poor memory , recorded , Prepare for future use .

The project foundation is layered

I'm learning DDD Hierarchical knowledge of , Now the code only uses some DDD Knowledge of tactical design , Now this stratification is enough for future knowledge accumulation , Perfect the above , The current technology is very good , Write the part you have used or can understand in combination with the understanding of the Internet and the use .

Infrastructure layer

Knowledge of the infrastructure layer ：Code First ,EF Core,Autofac Dependency injection , Implementation interface of warehousing mode , Implementation interface of domain service , cache , And various basic tools

One ,Code First： Use Code First Data migration to database .

Common database migration commands ： Add-Migration Migration name —— Add this migration Update-Database—— Migrate this time to the database Add-Migration InitialCreate -IgnoreChanges -—— Create an empty data migration ： The current version is the starting point

Two ,EF Core ： Soft delete —— Global filter deleted status ,AsNoTracking() —— Queries that are not persisted to the database use Any—— Query and judge using Any ,Z.EntityFramework.Plus-—— Bulk changes , Delete , Additions and deletions , Simple encapsulation asynchronous Anysnc Await Method

3、 ... and , Tool class , for example MD5,AutoMapperHelper,LamdaHelper,RedisHelper Simple application , Read configuration file , Unified return parameters, etc .

Four ,Redis cache , Multiple data types , Inquire about , High insertion efficiency ,Redis Synchronize policy with database , First update the database and delete the cache , Delay double delete ,（ Time delay , Judge the delay time according to the data queried ）, Use StackExchange.Redis

application layer

Relevant knowledge used by the application layer ：AutoMapper,Dto,Autofac Dependency injection

One ,Dto： Data transmission object , Mainly the presentation layer and application layer transmit data

Two ,AutoMapper： Transfer data between objects , First, use the warehouse to query the data , And then through AutoMapper Convert to the data required by the front end and return

Domain layer

Knowledge used in the domain layer ： Entity , The value object , Domain service interface , Warehouse interface , polymerization ,Autofac Dependency injection

One , Entity ： There's a unique identification （ only , immutable ）, Include business logic , And its own verification , Constructor instantiation , The entity's Set Should be set to private

Two , The value object ： There is no unique identity , Used to describe the characteristics of a thing , What is the representation

3、 ... and , polymerization ： Aggregate roots are entities , Aggregation is a combination of objects , The aggregation itself maintains its own consistency , Encapsulate business logic , Aggregate as small as possible , Aggregations are referenced by unique identifiers

Four , Storage ： Warehousing is for aggregation , Encapsulate domain logic , Clarify the purpose of the query , Only the aggregated status is maintained in the warehouse , No persistence , Storage can facilitate unit testing , Replace ORM

5、 ... and , Field service ：, Domain services are stateless , Some business logic that cannot be put into aggregation can use domain services , Multiple aggregation roots coordinate , Warehousing can be used in domain services

6、 ... and ,Autofac Dependency injection ： It is conducive to decoupling between project layers , Facilitate unit testing , Constructor injection , Dependency inversion , Injection of assemblies by convention

Presentation layer

One , Show the relevant knowledge used by the layer ：.Net Core WebApi ,MVC,JWT Swagger, Capture of log exceptions , Model validation ,Log4Net,Autofac Dependency injection , filter

Two ,JWT：JWT Includes the use of . Three separate parts ： Header Head Payload load Signature Signature , Add... To each request on the front end JWT Issued by Token To replace Session, Verify the access page

3、 ... and ,Swagger： have access to Swagger To request WebApi , And view WebApi Interface ,Swagger Interface documents can be made

Four ,Log4Net： Global capture of log exceptions , Log to TXT in

5、 ... and , filter ： Use filters to validate the model ,Log4Net Global capture of log exceptions , And access to permissions

Simple unit testing

Relevant knowledge used in unit testing ：Xunit,Autofac Dependency injection

The direction of study , And the goal

Thank you for your guidance , Study .Net Core Broadened my horizons , Only to learn that DDD,ABP, And the above technology , Although my skills are still very good , Many technologies and basic knowledge are not very solid , But I will continue to study , Thanks to every technology sharer in the blog Park .

One , Direction ： Study Redis , Message queue , Read / write separation ,DDD , Business analysis capabilities , ABP

Two , The goal is ： Next year, I will become an intermediate programmer

Project source address

https://github.com/Fengddd/ProjectNetCore.git