Node.js, Express.js and http-proxy-middleware
http-proxy-middleware is a Node.js module that provides a simple solution for proxying requests from your website or application to another http backend. It is easy to configure and is compatible with Express.js.
What is a Proxy Server?
A proxy server is an intermediary server between two or more networks. It acts as a gateway between the two networks, allowing the user to invisibly access resources from either network. Proxies can be used for a variety of purposes, such as:
Accessing content that is restricted for certain IP addresses
Storing information about user and their browsing activities
Improving security by filtering out invalid or malicious requests
Increasing speed and performance by caching responses
How to Set Up a Basic Proxy Server
First, install the required packages. We'll need Node.js, Express.js and http-proxy-middleware. We can do this with npm:
$ npm install node express http-proxy-middleware
Now that we have the packages installed, let's create a basic Node.js application:
var app = require('express')();
var httpProxy = require('http-proxy-middleware');
In the above code, we are creating a basic web server with Express.js and then routing any requests to /path/to/resource to the resource.example.com domain.
Finally, we start our server on port 3000:
$ node app.js
Now any requests to /path/to/resource will be proxied to resource.example.com.
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