Middleware Functions
In NodeJS, middleware functions are JavaScript functions that have access to the request object (req
), response object (res
), and the next middleware function in the pipeline (next
). Middleware functions can perform tasks such as modifying request or response objects, terminating the request-response cycle, or passing control to the next middleware function in the pipeline.
Explain the concept of middleware in NodeJS
Middleware in NodeJS refers to a software design pattern where functions are invoked sequentially in a pipeline to handle requests and responses in web applications. It acts as an intermediary layer between the client and the server, allowing for modularization of request processing logic and enabling cross-cutting concerns such as authentication, logging, error handling, and data transformation. Let’s delve deeper into the concept of middleware in NodeJS.
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