Express.js Middleware Concept Explained | Application, Route & Error Middleware

Express.js Middleware Concept Explained | Application, Route & Error Middleware

In this video, we’ll deeply understand the Middleware concept in Express.js using real-life examples and practical backend scenarios.

Middleware is one of the most important concepts in backend development, especially when working with Node.js & Express.js. If you want to build scalable, secure, and clean backend APIs, this video is a must-watch.

What you’ll learn in this video:
• What is Middleware in Express.js?
• Why Middleware is important in backend development
• Real-life example of middleware (step-by-step flow)
• Types of Middleware in Express:
• Application-level Middleware
• Route-level Middleware
• Built-in Middleware
• Error-handling Middleware
• How middleware works between request → response
• Where middleware is used in real projects (Auth, Logging, Validation)

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#middleware #nodejs #backenddeveloper #javascript #semicoloncoders