How to forward API interface using Kong in Node.js

Node.js is a very popular back-end programming language that can be used to build web applications. Kong is an API management platform that can be used to manage and control access to API interfaces. This article will introduce how to use Kong to forward API interfaces in Node.js.

Kong is a completely free, open source, and extensible API management platform. It can manage and control between the API interface and the client, including load balancing, security authentication, access control, logging, monitoring and other functions. Kong is developed based on Nginx and provides a set of easy-to-use APIs.

Node.js is a JavaScript runtime based on the Chrome V8 engine, which can run JavaScript code on the server side. Node.js has efficient event-driven, non-blocking I/O and lightweight design, making it ideal for building highly scalable, high-performance web applications.

It is very simple to use Kong to forward API interfaces in Node.js. You can follow the following steps:

1. Install Kong

First, run the Node.js application Install Kong on the program's server. Kong can be installed using the package manager or the officially provided binaries. Once the installation is complete, launch Kong and make sure it is running.

2. Create API

Create an API in Kong to specify the location and other details of the backend service to be routed to. It can be created through the RESTful API provided by Kong.

For example, you can create an API in Kong using the following command:

$ curl -i -X ​​POST \
--url http://localhost:8001/apis/ \
--data 'name=my-api' \
--data 'uris=/my-api' \
--data 'upstream_url=http://localhost:3000'

Among them, name specifies the name of the API, uris specifies the path of the API, and upstream_url specifies the address of the back-end service.

3. Configure the proxy

Use the node-http-proxy module in Node.js to configure the proxy to route requests from Kong to the backend service. A proxy can be created using the following code:

const http = require('http');
const httpProxy = require('http-proxy');

const proxy = httpProxy.createProxyServer ({});

http.createServer(function(req, res) {
proxy.web(req, res, { target: 'http://localhost:8000' });
}).listen(8000);

Among them, httpProxy.createProxyServer() is used to create a proxy server, http.createServer() is used to create an HTTP server, and proxy.web() is used to send requests to Target server, { target: 'http://localhost:8000' } specifies the address of the target server.

4. Test

Now you can use curl or other tools to send requests and test whether the API is working properly. You can test this with the following command:

$ curl -i http://localhost:8000/my-api

If everything is fine, you should receive a response back from the backend service.

Summary

It is very simple to use Kong to forward API interfaces in Node.js. Through the above steps, you can use Kong to manage and control access to the API interface. Kong provides rich functionality and an easy-to-use RESTful API, making API management simple and efficient. At the same time, Node.js makes web applications highly scalable and performant through non-blocking I/O and efficient event-driven models.

The above is the detailed content of How to forward API interface using Kong in Node.js. For more information, please follow other related articles on the PHP Chinese website!