Specialized skill for building production-ready serverless applications on GCP. Covers Cloud Run services (containerized), Cloud Run Functions (event-driven), cold start optimization, and event-driven architecture with Pub/Sub.
Specialized skill for building production-ready serverless applications on GCP. Covers Cloud Run services (containerized), Cloud Run Functions (event-driven), cold start optimization, and event-driven architecture with Pub/Sub.
Containerized web service on Cloud Run
When to use: Web applications and APIs,Need any runtime or library,Complex services with multiple endpoints,Stateless containerized workloads
# Dockerfile - Multi-stage build for smaller image
FROM node:20-slim AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
FROM node:20-slim
WORKDIR /app
# Copy only production dependencies
COPY --from=builder /app/node_modules ./node_modules
COPY src ./src
COPY package.json ./
# Cloud Run uses PORT env variable
ENV PORT=8080
EXPOSE 8080
# Run as non-root user
USER node
CMD ["node", "src/index.js"]
// src/index.js
const express = require('express');
const app = express();
app.use(express.json());
// Health check endpoint
app.get('/health', (req, res) => {
res.status(200).send('OK');
});
// API routes
app.get('/api/items/:id', async (req, res) => {
try {
const item = await getItem(req.params.id);
res.json(item);
} catch (error) {
console.error('Error:', error);
res.status(500).json({ error: 'Internal server error' });
}
});
// Graceful shutdown
process.on('SIGTERM', () => {
console.log('SIGTERM received, shutting down gracefully');
server.close(() => {
console.log('Server closed');
process.exit(0);
});
});
const PORT = process.env.PORT || 8080;
const server = app.listen(PORT, () => {
console.log(`Server listening on port ${PORT}`);
});
# cloudbuild.yaml