This repo is to demo how simple it is to use ECS Fargate to replace longer running lambda functions. To read more about this process please read the corresponding blog post.

https://www.gravitywell.co.uk/insights/using-ecs-tasks-on-aws-fargate-to-replace-lambda-functions/

• Find and replace all instances of ACCOUNT_ID with your AWS account ID
• yarn install

For the purpose of this repository, you can test the runtime code by running the commands:

• yarn invoke:js-example - to run the example Javascript file
• yarn invoke:ts-example - to run the example Typescript file with esbuild

The project uses AWS CDK to provision all the required infrastructure. To deploy the infrastructure run:

• yarn cdk deploy ExampleLambdaToEcsStack

The deployment of code is separated out so that you can deploy infrastructure and code separately. In the repo there are 2 ways to deploy you code.

To deploy the Javascript handler example run:

• yarn deploy:docker:js

To deploy the Typescript handler example run:

• yarn deploy:docker:ts

There is a file name tidy-up-ecs-tasks.ts. This is an example of a lambda function that could be used to stop any ECS tasks that have been running too long, too avoid paying huge AWS costs on tasks that do not shut down correctly. This repo does not provide any infrastructure for the lambda function or the event bridge cron schedule.

This repo is intentionally over simplified to focus on the infrastructure and process. As always in a production environment I would advise using CI/CD processes to formalize the automation of building/testing/deploying infrastructure and code