What Is AWS EC2 and Why Use It for Node.js Deployment?
Learn what AWS EC2 is, how it works, and why it is a great choice for deploying Node.js applications like DevTinder from virtual machines to security groups and pricing.
What Is AWS EC2?
Amazon Elastic Compute Cloud (EC2) is a web service that provides resizable virtual servers in the cloud. It is the most common way to deploy Node.js applications to production.
What Is a Virtual Server?
A virtual server is a virtualized computer running in AWS's data center. It has:
- CPU For processing
- RAM For memory
- Storage EBS volumes (like a hard drive)
- Network A public IP and DNS name
- OS Usually Linux (Ubuntu, Amazon Linux)
You get full control over the server, just like a physical machine in your office, but without the hardware maintenance.
Why Use EC2 for Node.js?
- Full control You install Node.js, Nginx, PM2, and configure everything
- Scalability Upgrade instance type or add more instances behind a load balancer
- Cost-effective Free tier includes 750 hours of t2.micro per month
- Global Deploy in multiple regions for low latency worldwide
- Integration Works with other AWS services (S3, RDS, SES, etc.)
EC2 Key Concepts
Instance A virtual server. Each instance has a type (t2.micro, t3.small, etc.) that determines CPU and RAM.
AMI (Amazon Machine Image) The template for your instance. It includes the OS and pre-installed software. Common AMIs: Ubuntu 22.04, Amazon Linux 2.
Security Group A virtual firewall. You configure which ports are open (22 for SSH, 80 for HTTP, 443 for HTTPS).
Key Pair SSH key for connecting to the instance. You download a .pem file and use it with SSH.
Elastic IP A static public IP that doesn't change when you stop/start the instance.
EBS Volume Persistent storage attached to the instance. Survives stop/start.
EC2 Instance Types for Node.js
| Type | CPU | RAM | Use Case | Price (on-demand) |
|---|---|---|---|---|
| t2.micro | 1 | 1 GB | Development, free tier | ~$8.50/mo |
| t2.small | 1 | 2 GB | Small production | ~$17/mo |
| t3.micro | 2 | 1 GB | Better burst performance | ~$8.35/mo |
| t3.small | 2 | 2 GB | Small production | ~$16.7/mo |
| t3.medium | 2 | 4 GB | Medium production | ~$33/mo |
| c5.large | 2 | 4 GB | CPU-intensive | ~$42/mo |
For DevTinder development, t2.micro (free tier) is sufficient. For production with real users, start with t3.small or t3.medium.
Security Groups for Node.js
A typical security group for a Node.js app:
| Port | Protocol | Source | Purpose |
|---|---|---|---|
| 22 | TCP | Your IP | SSH access |
| 80 | TCP | 0.0.0.0/0 | HTTP (Nginx) |
| 443 | TCP | 0.0.0.0/0 | HTTPS (Nginx + SSL) |
| 3000 | TCP | Your IP | Direct Node.js access (debugging) |
Never open port 3000 to 0.0.0.0/0 in production use Nginx as a reverse proxy.
Pricing Models
- On-Demand Pay per hour, no commitment. Good for development.
- Reserved 1 or 3 year commitment, up to 75% discount. Good for production.
- Spot Use spare capacity, up to 90% discount. Good for batch jobs.
- Free Tier 750 hours/month of t2.micro for 12 months. Good for learning.
The Takeaway
AWS EC2 provides virtual servers in the cloud with full control, scalability, and integration with AWS services. For Node.js deployment, EC2 gives you the flexibility to install Node.js, Nginx, PM2, and configure everything yourself. Start with the free tier (t2.micro) for development and scale up as needed.
Amazon EC2 (Elastic Compute Cloud) is a web service that provides resizable virtual servers in the cloud. Each instance has CPU, RAM, storage, network, and an OS (usually Linux). You get full control to install and configure software.
EC2 gives full control over the server (install Node.js, Nginx, PM2), scalability (upgrade instance type or add load balancers), cost-effectiveness (free tier includes 750 hours of t2.micro), global deployment, and integration with other AWS services.
For development, use t2.micro (free tier, 1 CPU, 1 GB RAM). For small production, use t3.small (2 CPU, 2 GB RAM, ~$17/mo). For medium production, use t3.medium (2 CPU, 4 GB RAM, ~$33/mo). Scale up as traffic grows.
Port 22 (SSH, restrict to your IP), port 80 (HTTP, anywhere), port 443 (HTTPS, anywhere). Optionally port 3000 (Node.js, restrict to your IP for debugging). Never expose port 3000 to the public in production use Nginx as a reverse proxy.
On-Demand (pay per hour, no commitment, good for dev), Reserved (1-3 year commitment, up to 75% discount, good for production), Spot (spare capacity, up to 90% discount, good for batch jobs), and Free Tier (750 hours/month of t2.micro for 12 months).
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