10 ASP.NET Core Architecture Best Practices

If you're working with ASP.NET Core, there are some best practices you should follow to ensure your architecture is sound. In this article, we'll cover 10 of them.

ASP.NET Core is a powerful web development framework that allows developers to create robust and secure web applications. However, it is important to understand the best practices for designing and building an ASP.NET Core application in order to ensure that the application is secure, efficient, and maintainable.

In this article, we will discuss 10 best practices for designing and building an ASP.NET Core application. We will cover topics such as authentication, authorization, logging, and performance optimization. By following these best practices, you can ensure that your application is secure, efficient, and maintainable.

1. Use Dependency Injection

Dependency injection allows you to decouple your code from its dependencies, making it easier to test and maintain. It also makes it easier to switch out implementations of a given dependency without having to rewrite the entire application.

To use dependency injection in ASP.NET Core, you’ll need to register all of your services with the built-in Dependency Injection container. This can be done either manually or using an IoC (inversion of control) container such as Autofac or StructureMap. Once registered, you can then inject these services into your controllers and other classes via constructor parameters.

2. Use Middleware to Handle Requests and Responses

Middleware is a component that sits between the server and the application, allowing you to intercept requests and responses. This allows you to add custom logic or features to your application without having to modify the codebase itself.

For example, middleware can be used to handle authentication, authorization, logging, caching, and more. It also makes it easier to maintain and update your application since all of the logic is handled in one place. Additionally, using middleware helps keep your code clean and organized, making it easier for developers to understand and debug.

3. Keep Your Controllers Thin

Controllers are responsible for handling incoming requests and returning responses. If your controllers become bloated with too much logic, they can quickly become difficult to maintain and debug. This is why it’s important to keep them as thin as possible by delegating most of the business logic to services or other classes.

By keeping your controllers thin, you’ll be able to easily test and maintain them, which will make your application more reliable and easier to work with in the long run.

4. Unit Test Your Code

Unit testing helps you to ensure that your code is working as expected and that any changes you make don’t break existing functionality. It also allows you to quickly identify bugs in the system, which can save time and money in the long run.

Unit tests should be written for each component of your application, including controllers, models, services, and repositories. This will help you to verify that all components are functioning correctly and that they interact with each other properly. Additionally, unit tests should be automated so that they can be easily re-run whenever a change is made to the codebase.

5. Logging

Logging is essential for debugging and troubleshooting issues in production. It also helps you track user activity, identify performance bottlenecks, and monitor system health.

To ensure that your application logs are useful, it’s important to use a structured logging approach. This means using a logging framework such as Serilog or NLog to create log entries with consistent formatting and structure. You should also consider setting up an external logging service such as Splunk or Loggly to store and analyze your logs.

Finally, make sure to set up appropriate log levels so that only the most relevant information is logged. For example, you may want to log all errors but only some warnings and informational messages.

6. Exception Handling

Exceptions are a way of signaling that something has gone wrong in the application. If they’re not handled properly, it can lead to unexpected behavior and even security vulnerabilities.

To ensure your ASP.NET Core applications are secure and reliable, you should always use try/catch blocks when dealing with exceptions. This will allow you to catch any errors before they reach the user and provide them with an appropriate response. Additionally, you should log all exceptions so that you can track down the source of the problem quickly and efficiently. Finally, make sure to have a global exception handler that catches any unhandled exceptions and provides users with a friendly error page.

7. Caching

Caching helps to reduce the load on your server by storing frequently accessed data in memory. This means that when a user requests a page, they don’t have to wait for the entire page to be generated from scratch – instead, the cached version is served up quickly and efficiently.

Caching can also help improve performance by reducing the number of database queries needed to generate a page. By caching commonly used objects such as menus or product lists, you can avoid having to query the database each time a page is requested.

Finally, caching can help reduce bandwidth usage by serving up static content (such as images) directly from the cache rather than downloading them from the server every time.

8. Security

Security is essential for any application, and ASP.NET Core provides a number of features to help developers secure their applications.

The first step in securing an ASP.NET Core application is authentication. Authentication allows users to prove that they are who they say they are. ASP.NET Core supports several different types of authentication, including Windows authentication, forms-based authentication, and OpenID Connect.

Once the user has been authenticated, authorization can be used to control what resources the user can access. ASP.NET Core provides role-based authorization, which allows you to assign roles to users and then restrict access to certain resources based on those roles.

Finally, ASP.NET Core also provides support for encryption, hashing, and other security measures to ensure that data remains safe and secure.

9. Optimization

Optimization helps to ensure that your application is running as efficiently and quickly as possible. This means fewer resources are being used, which can help reduce costs and improve performance.

Optimizing an ASP.NET Core architecture involves a few different steps. The first step is to identify any areas of the codebase that could be improved or optimized. This includes looking for inefficient algorithms, redundant code, and other potential bottlenecks. Once these have been identified, you can then begin to refactor the code to make it more efficient. Additionally, caching techniques such as output caching can also be employed to further optimize the application’s performance. Finally, monitoring tools should be used to track the performance of the application over time so that any issues can be addressed quickly.

10. Deployment

Deployment is the process of taking your application from development to production, and it’s critical that you get this right.

When deploying an ASP.NET Core application, there are several best practices to keep in mind. For example, make sure to use a deployment automation tool such as Octopus Deploy or Azure DevOps for automated deployments. Additionally, ensure that all configuration settings are stored securely outside of the codebase, preferably in environment variables. Finally, always test your application thoroughly before deploying it to production.


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