Building Lean Spring Boot Applications for the Cloud by Patrick Baumgartner

Conference Talk Summary

Building Lean Spring Boot Applications for the Cloud

Considerations regarding resources

• Use maven-plugin for efficient pom.xml customization
• Create a baseline for optimization experiments
• Spring Boot 3.3 released, with improvements in startup time and memory usage

Optimizations

• Use lazy Spring Beans to reduce memory usage and improve startup time
• Leverage jlink for efficient JAR creation and reduced image size
• Utilize Buildpacks for efficient container creation and streamlined deployment
• Pin Oracle JVM version for improved performance and reliability

Benchmarking

• Use WRK for benchmarking and comparing optimizations
• Measure build time, startup time, resource usage, and throughput
• Calculate container size and optimize for smaller images

Virtual Threads

• Use virtual threads for improved performance and scalability
• Leverage Java 17 and Java 21 for further optimizations

Pet Clinic

• Pet Clinic is a CRUD application used for showcasing technology and testing optimizations
• Utilize H2 as an in-memory database for testing purposes
• Leverage Spring Boot 3.2 for improved performance and scalability

Community Cases

• Discuss the benefits of using Buildpacks and jlink for efficient container creation and reduced image size
• Showcase examples of leveraging Java 17 and Java 21 for improved performance and scalability

Takeaways

• Lean Spring Boot applications can be built using Buildpacks and jlink for efficient container creation and reduced image size
• Optimizations can be achieved by leveraging lazy Spring Beans, jlink, and Virtual Threads for improved performance and scalability
• Pet Clinic is a useful test bed for showcasing technology and testing optimizations