Middleware in ASP.NET Core Every Developer Should Know About | HOW TO - Code Samples

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Middleware in ASP.NET Core serves as a crucial component in handling requests and responses in web applications. It offers flexibility, modularity, and enhances the overall functionality of web applications. This article delves into creating and understanding middleware, particularly focusing on the order of execution and its impacts.

Understanding Middleware
Middleware is software layer that acts as a bridge between different components or applications, handling tasks such as request processing, response generation, authentication, and logging. It’s benefits include:

Decoupling: Separates different application components, promoting cleaner code.

Reusability: Common functions like logging can be reused, enhancing efficiency.

Efficiency and Scalability: Streamlines communication, making the application scalable.

Understanding Pipeline
A pipeline is a sequence of middleware components through which an HTTP request flows, where each component performs specific operations before passing the request to the next component. This structured flow allows for modular and efficient handling of requests and responses in web application.

The Importance of Middleware Order
The order of middleware in the pipeline is crucial. It dictates the sequence of operations on both incoming requests and outgoing responses.

For Incoming Requests: Middleware registered first acts on the request first. This is essential for logging, modifying, or validating requests.
For Outgoing Responses: The last registered middleware acts first on the response. Important for setting headers or modifying response data.

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