Java is indeed a first-class citizen of the AWS world. With the Snapstart feature recently released by AWS (to address cold-start concerns), as well as support for Java 17 runtime for AWS Lambdas, we can use a powerful language to implement our serverless functions.
In this tutorial we will look at using the following technologies:
- Java (11) (Java 17 examples coming soon..)
- AWS Lambda, DynamoDB, API Gateway, SQS
- AWS Java SDK v1 and Java SDK v2 tutorials
- Deployment via Serverless framework
- Deployment via AWS CDK
This tutorial repo started by using AWS SDK for Java v1 - you can still get hold of it in the aws-sdk-1 directory.
See the AWS-SDK-1 folder.
This is a major rewrite of the 1.x SDK for Java. See the AWS docs for more information about this version.
See the AWS-SDK-2 folder for a tutorial on using the 2.x sdk.
The section on using Java for CDK is still very much work in progress, but should give some guidance already for using Java and CDK to deploy Lambda functions, API Gateway endpoints, and even setting up a AWS CodePipeline to trigger deployments from Github commits.