Nginx Serves as Web App's Reverse Proxy and Static File Server

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Nginx is a software commonly deployed at the public edge of a web application to manage incoming requests. It frequently acts as a reverse proxy, forwarding client requests to application processes like Node or Python running on internal addresses. This setup provides a stable public layer, allowing the backend app to be restarted or moved without changing the public entry point. Nginx can also serve static files like images and stylesheets directly from disk, bypassing the application. However, it does not run application code and cannot prevent errors if the backend application itself is down.

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