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Web Services

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What are Web Services?

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Key Features

• Autoscaling: Automatically scale up or down based on traffic
• Load Balancing: Distribute traffic across multiple instances
• Zero Downtime Deployments: Deploy updates without service interruption
• Health Checks: Automatic health monitoring and recovery
• Custom Domains: Use your own domain with automatic SSL certificates
• Environment Variables: Secure configuration management
• Logs & Metrics: Real-time observability

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Use Cases

• REST APIs and GraphQL endpoints
• Microservices architecture
• Webhooks and background processing
• Long-running backend services
• Database connections and connections pooling

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Quickstart: Deploy an Express App

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Step 1: Fork the Repository

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Example Express App Structure

// app.js
const express = require('express');
const app = express();
const port = process.env.PORT || 8080;

app.get('/', (req, res) => {
  res.json({ message: 'Hello from Antryk!' });
});

app.listen(port, '0.0.0.0', () => {
  console.log(`Server running on port ${port}`);
});

// package.json
{
  "name": "express-hello-world",
  "version": "1.0.0",
  "scripts": {
    "start": "node app.js"
  },
  "dependencies": {
    "express": "^4.18.2"
  }
}

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Step 2: Create a Web Service

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Step 3: Configure Your Service

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Deploy from GitHub

• Repository: Select your GitHub repository
• Branch: Choose the branch to deploy from (e.g., main)
• Framework: Automatically detected from your repository
• Install Command: npm install or yarn install
• Build Command: npm run build (if needed) or leave empty
• Start Command: node app.js or npm start
• Output Directory: Leave empty for Express apps
• Version: Specify Node.js version (e.g., 18 or 20)

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Region

• us-east-1 - Virginia, USA
• eu-west-1 - Ireland
• ap-south-1 - Mumbai, India
• ap-southeast-1 - Singapore

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Environment Variables

• Click + Add Environment Variable to add individual variables
• Click Add from .env to import from a .env file
• Variables marked as Secret will be hidden in logs

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Configuration Summary

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Step 4: Deploy

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Step 5: Monitor Your Deployment

• View Logs: Real-time logs from your application
• Check Metrics: CPU, memory, and request metrics
• View Deployments: History of all deployments
• Manage Scaling: Add or remove instances
• Update Config: Modify environment variables and settings

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Troubleshooting Express Apps

• Check the Start Command matches your package.json scripts
• Ensure your app listens on 0.0.0.0 and uses process.env.PORT
• Review build logs for errors

• Verify variables are set in the console
• Restart the service after adding variables
• Check variable names match your code

• Check Node.js version compatibility
• Review package.json dependencies
• Ensure build commands are correct

• Verify database credentials in environment variables
• Check database is accessible from service IP
• Review connection pooling settings

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Getting Started

1. Create a new Web Service from your dashboard
2. Connect your repository or use Docker images
3. Configure resources (CPU, memory, instances)
4. Set environment variables and secrets
5. Deploy and get your service URL

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Console Configuration

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Deploy from GitHub

1. Repository: Select the GitHub repository you want to deploy
2. Branch: Choose the branch to deploy from (e.g., main, develop)
3. Framework: Automatically detected from your repository
4. Install Command: Command to install dependencies (e.g., npm install, yarn install, pip install -r requirements.txt)
5. Build Command: Command to build your project (e.g., npm run build, yarn build)
6. Start Command: Command to start your app (e.g., npm start, node app.js, python app.py)
7. Output Directory: Where your built files are stored (leave empty for Express APIs)
8. Version: Runtime version (e.g., Node.js 18, Python 3.11)

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Region

• us-east-1 - Virginia, USA
• us-west-2 - Oregon, USA
• eu-west-1 - Ireland
• eu-central-1 - Frankfurt, Germany
• ap-south-1 - Mumbai, India
• ap-southeast-1 - Singapore
• ap-northeast-1 - Tokyo, Japan

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Environment Variables

• Add individual variables or import from .env file
• Mark variables as secret to hide them in logs
• Use different values for different environments

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Configuration Examples

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Node.js/Express

Install Command: npm install
Build Command: npm run build
Start Command: npm start
Version: 18

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Python/Flask

Install Command: pip install -r requirements.txt
Build Command: (leave empty)
Start Command: gunicorn app:app
Version: 3.11

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Python/FastAPI

Install Command: pip install -r requirements.txt
Build Command: (leave empty)
Start Command: uvicorn app:app --host 0.0.0.0 --port 8080
Version: 3.11

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Go

Install Command: go mod download
Build Command: go build -o app
Start Command: ./app
Version: latest

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Ruby/Rails

Install Command: bundle install
Build Command: rails assets:precompile
Start Command: bundle exec rails server -b 0.0.0.0 -p 8080
Version: 3.2

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Advanced Configuration

• Docker: Use custom Docker images
• Autoscaling: Set min/max instances based on CPU or memory
• Health Checks: Configure custom health check endpoints
• Resources: Adjust CPU and memory allocation
• Instance Type: Choose between standard and performance instances

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Pricing

• Instance hours: Running time of your service
• Resource usage: CPU and memory allocation
• Bandwidth: Inbound and outbound data transfer