In 2025, a backend without Docker is like code without Git. And NestJS and PostgreSQL have become a great pair for writing scalable, type-safe, and fast applications. Together with Docker, this turns into a powerful stack that can be raised in 5 minutes and scaled up to production.
Let's figure out why this stack is so popular, what's cool about it, and how to start with it today 🧩
🧱 Why these technologies?
Technology | Why her? |
|---|---|
⚙️ NestJS | Architectural, modular, convenient. Written in TypeScript. |
🐘 PostgreSQL | Reliable, scalable SQL database with extensions and excellent documentation. |
🐳 Docker | Running all components in isolation. Works the same everywhere. |
🔧 Project architecture
📦 my-app/
├── backend/ ← NestJS-приложение
│ ├── src/
│ └── Dockerfile
├── db/ ← Инициализация PostgreSQL
│ └── init.sql
├── docker-compose.yml
└── README.md
NestJS processes API requests, communicates with the database
PostgreSQL runs in a separate container
Docker Compose combines all this
⚡ Advantages of this approach
🧪 Local development = like production
🏗 Scalability — easy to add Redis, queues, microservices
🧠 NestJS architecture = easy to read, test and expand
📥 PostgreSQL supports JSON, transactions, indexes, and extensions
🚢 Docker allows you to run a project with one command
🏁 Launch example
docker-compose.yml:
version: '3.9'
services:
db:
image: postgres:16
environment:
POSTGRES_USER: user
POSTGRES_PASSWORD: pass
POSTGRES_DB: mydb
volumes:
- ./db:/docker-entrypoint-initdb.d
ports:
- '5432:5432'
api:
build: ./backend
ports:
- '3000:3000'
depends_on:
- db
environment:
DATABASE_URL: postgres://user:pass@db:5432/mydb
👨💻 Why is this a "love" stack?
NestJS = TypeScript + Spring level architecture
PostgreSQL = the database trusted by banks, startups and NASA
Docker = universal environment, without "but it doesn't run on my computer"
If you want a stable, scalable and production-grade stack, this is one of the best options in 2025.
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