Microservices Architecture: Microservices is a web architecture that breaks an application into small, independent services that communicate with each other using APIs. Each microservice is responsible for a specific task, and can be developed, deployed, and scaled independently. Here is an example of a microservices architecture using Node.js and Docker:
javascript
// service1.js
const express = require('express');
const app = express();
app.get('/', (req, res) => {
res.send('Service 1');
});
app.listen(3000, () => {
console.log('Service 1 running at http://localhost:3000/');
});
In this code, we create a simple Express app that listens on port 3000 and returns the message "Service 1" when the root URL is requested.
javascript
// service2.js
const express = require('express');
const app = express();
app.get('/', (req, res) => {
res.send('Service 2');
});
app.listen(4000, () => {
console.log('Service 2 running at http://localhost:4000/');
});
In this code, we create another Express app that listens on port 4000 and returns the message "Service 2" when the root URL is requested.
yaml
// docker-compose.yml
version: '3'
services:
service1:
build: .
ports:
- "3000:3000"
service2:
build: .
ports:
- "4000:4000"
In this code, we define a Docker Compose file that creates two services based on the Node.js image. Each service maps its container port to a host port, allowing the services to be accessed from the host machine.
To run this example, you can create a directory with the three files (service1.js, service2.js, and docker-compose.yml) and run the following command in the directory:
docker-compose up
This will build and start the two services in separate containers, allowing them to communicate with each other over the network.
Overall, web architecture is a critical aspect of web development, and choosing the right architecture for your application can greatly impact its scalability, performance, and maintainability.
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