Serverless applications on AWS with Lambda using Java 25, API Gateway and Aurora DSQL - Part 1 Sample applications

Introduction In this article series, we'll explain how to implement a serverless application on AWS using Lambda with the  support of the released Java 25 version . We'll also use API Gateway, relational Serverless database Aurora DSQL, and AWS SAM for the Infrastructure as Code. After it, we'll measure the performance (cold and warm start times) of the Lambda function without any optimizations. Hereafter, we'll introduce various cold start time reduction approaches like Lambda SnapStart with priming techniques and GraalVM Native Image. In this article, we'll introduce our sample application. Sample applications and their architecture You can find a code example of our 2 sample applications in my GitHub repositories: aws-lambda-java-25-aurora-dsql . Here we use JDBC with Hikari connection pool . aws-lambda-java-25-hibernate-aurora-dsql . Here we use Hibernate ORM framework with Hikari connection pool . I think that Hibernate JPA is mostly in use together with frameworks like Spring Boo