java

The Simple Webservice

This is an example CDK stack to deploy The Simple Webservice stack described by Jeremy Daly here - https://www.jeremydaly.com/serverless-microservice-patterns-for-aws/#simplewebservice

This is the most basic of implementations and would have to be hardened before production use. e.g. cognito added to the API Gateway

After deployment you should have a proxy api gateway where any url hits a lambda which inserts a record of the url into a dynamodb with a count of how many times that url has been visited.

Requirements

• Java JDK 11
• node.js

As a packaging and dependency management tool Maven is used for Lambda and CDK. Maven doesn't have to be installed since you can use the Maven Wrapper. The Maven Wrapper can be run by using the ./mvnw (Unix based) or ./mvnw.cmd (Windows based).

Example:

./mvnw clean package

You can compile & package from this folder, to deploy go to the cdk subfolder.

Useful commands

• ./mvnw package compiles and packages the source code for both Lambda and CDK modules
• ./mvnw test perform the unit tests for both Lambda and CDK modules
• cdk diff compare deployed stack with current state
• cdk synth emits the synthesized CloudFormation template