What are the differences between synchronous and asynchronous middleware?

What are the differences between synchronous and asynchronous middleware?

Synchronous middleware processes requests in a sequential manner, while asynchronous middleware allows for non-blocking operations.

Can you give me an example of each?

Sure! An example of synchronous middleware is Express.js middleware that handles requests one at a time. An example of asynchronous middleware is a service that processes requests in parallel, like using Promises in Node.js.

What are the advantages of using asynchronous middleware?

Asynchronous middleware can improve performance by handling multiple requests simultaneously, reducing wait times for users.

Are there any downsides to using asynchronous middleware?

Yes, it can be more complex to implement and debug due to the non-linear flow of execution.