Building Scalable Microservices with Node.js

Node.js is an excellent platform for building microservices due to its event-driven architecture and rich ecosystem.

Service Architecture

import express from 'express';
import { createClient } from 'redis';

const app = express();
const cache = createClient();

app.get('/api/users/:id', async (req, res) => {
  const { id } = req.params;
  
  // Check cache first
  const cached = await cache.get(`user:${id}`);
  if (cached) return res.json(JSON.parse(cached));
  
  // Fetch from database
  const user = await db.users.findById(id);
  await cache.set(`user:${id}`, JSON.stringify(user));
  
  res.json(user);
});

Key Concepts

1. Service discovery
2. Load balancing
3. Circuit breaking
4. API gateway patterns

Best Practices

• Use Docker containers
• Implement proper monitoring
• Handle failures gracefully
• Design for scalability

Stay tuned for more Node.js insights!