# Supersonic Java on Lambda - Kim Kao

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Lambda
* Lambda Function Lifecycle
* Prewarm is helpful for around two hours
* X-Ray Trace
* Lambda Cold Start
* Java Hello World takes around one second.
* Node JS takes around half a second.
* Quarkus with GraalVM takes around half a second.

Optimization tips
* Load required classes in initialization
* Avoid reflection
* Less is more
* Prime dependencies

GraalVM
* Faster and Flexible
* JVM CI vs Substrate VM

Quarkus
* https://quarkus.io/
* Cloud native Java stack

Lambda Runtime API
* Environment Variables
* Processing Tasks

###### tags: `jcconf`