Spring Boot Production Deployment & Optimization

In Week 7, we mastered testing: unit tests, integration tests, and performance monitoring.
Now, in Week 8, it’s time to prepare your Spring Boot application for production.

We’ll cover:

• Profiles & environment configurations

• Packaging & Dockerization

• Deployment strategies (Cloud / On-Prem)

• Performance optimization

• Monitoring & logging

By the end, your Spring Boot project will be production-ready, scalable, and maintainable.

Step 1: Use Spring Profiles

Spring Boot allows environment-specific configurations using profiles: dev, test, prod.

Folder structure:

src/main/resources/
 ├── application.yml
 ├── application-dev.yml
 ├── application-prod.yml

Example application-prod.yml:

server:
  port: 8080

spring:
  datasource:
    url: jdbc:mysql://prod-db:3306/prod_db
    username: prod_user
    password: ${DB_PASSWORD}
  jpa:
    hibernate:
      ddl-auto: validate
    show-sql: false

Activate profile at runtime:

java -jar app.jar --spring.profiles.active=prod

✅ Benefits:

• Clean separation between environments

• No accidental dev configs in production

Step 2: Packaging Your Application

Create Executable Jar

mvn clean package

• Produces: target/app.jar

• Contains embedded Tomcat server → easy to run

Run the Jar

java -jar target/app.jar

Optional: run in background with systemd or nohup:

nohup java -jar target/app.jar > app.log 2>&1 &

Step 3: Dockerize Spring Boot

Dockerfile Example

# Use OpenJDK 17 base image
FROM openjdk:17-jdk-alpine

# Set workdir
WORKDIR /app

# Copy jar
COPY target/app.jar app.jar

# Expose port
EXPOSE 8080

# Run the app
ENTRYPOINT ["java","-jar","app.jar"]