Exam AWS Certified DevOps Engineer - Professional DOP-C02 topic 1 question 286 discussion

The LOCAL_DOCKER_LAYER_CACHE is a feature in Docker that allows you to store build cache layers locally on your filesystem. This can significantly speed up the build process by reusing layers that haven't changed, reducing the need to rebuild them from scratch

1. **Use Amazon ECR to Store Docker Images**: - Push the built Docker images to Amazon ECR after a successful build. - Pull the Docker images from Amazon ECR at the start of each build to use as a cache. 2. **Configure CodeBuild to Use Docker Layer Caching**: - Enable Docker layer caching in your CodeBuild project to further improve build performance.

1. Amazon ECR for Centralized Storage: • Storing Docker images in Amazon ECR allows you to maintain and reuse images across builds. This reduces the need to rebuild base images repeatedly, improving build performance. • ECR integrates seamlessly with AWS CodeBuild, making it a scalable and cost-effective solution for managing container images. 2. Local Docker Layer Caching: • Docker layer caching significantly reduces build time by avoiding the re-download or re-creation of unchanged layers. • CodeBuild supports enabling local caching with type: LOCAL_DOCKER_LAYER_CACHE. This caching stores intermediate image layers locally on the build host, which speeds up subsequent builds.