<ul><li>In Express.js, middlewares are special functions that have access to the request (req), response (res), and a third parameter called next.</li><li>Middlewares play a critical role in controlling the flow of the application by executing external logic before the main business logic.</li><li>They are used for tasks such as authentication, authorization, request validation, logging, monitoring, and error handling.</li><li>Middleware functions are defined using the app.use() method and executed sequentially in the order they are defined.</li></ul>

Understanding Middlewares in Express.js and Their Internal Working

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