MODRACXKENNETH D'SILVA

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Building High-Concurrency Node.js Microservices

Replacing legacy Express servers with Fastify reduces JSON serialization overhead, enabling Node.js microservices to process over 30,000 requests per second.

By Kenneth D'SilvaReading Time: 36 min readCategory: Architecture & Cloud

Fastify Server Implementation Code

// Fastify High-Performance Microservice Setup
const fastify = require('fastify')({ logger: false });

fastify.get('/api/products/:id', async (request, reply) => {
  const { id } = request.params;
  return { id, sku: `SKU-${id}`, status: 'in_stock' };
});

fastify.listen({ port: 3000, host: '0.0.0.0' });

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