AWS CodeBuild Popular2016年〜
A fully managed build service that automates source code compilation and testing
What It Does
AWS CodeBuild is a fully managed build service that automates source code compilation, test execution, and deployment package creation. No build server setup or management is required, as compute resources are automatically allocated for each build request. Multiple builds can run simultaneously with no build queue wait times. It also supports Docker image builds, automating the entire workflow through to pushing images to ECR.
Use Cases
CodeBuild is used wherever you need to automate the build process: compiling applications and running unit tests, building Docker container images and pushing them to ECR, building static sites and deploying to S3, automating security scans and code quality checks, and packaging Lambda functions for deployment.
Everyday Analogy
Think of it like a publishing house's printing factory. You hand over a manuscript (source code), and it automatically handles proofreading (testing), typesetting (compiling), and binding (packaging), delivering the finished product. The number of printing presses scales automatically based on order volume, so you never have to wait even during peak times.
What Is CodeBuild?
AWS CodeBuild is a fully managed service that automates source code building and testing. Traditionally, setting up and maintaining your own build servers required significant effort: managing Jenkins servers, updating plugins, monitoring build queues, and more. CodeBuild delegates all of this to AWS. Simply define your build steps in a buildspec.yml file to achieve a reproducible build environment.
Key Features
CodeBuild launches an isolated container environment for each build, preventing interference between builds. You can use AWS-provided managed images (Ubuntu, Amazon Linux, Windows) or custom Docker images. There is no limit on concurrent builds, so multiple projects can build simultaneously without wait times. The build cache feature lets you skip dependency package downloads to reduce build times.
buildspec.yml Structure
Build steps are defined in a buildspec.yml file in YAML format. The install phase installs runtimes and dependencies, the pre_build phase handles test preparation and logins, the build phase runs compilation and tests, and the post_build phase creates deployment packages. The artifacts section specifies build output destinations, and the cache section defines what to cache. Environment variables can be defined within the buildspec or securely retrieved from Systems Manager Parameter Store or Secrets Manager. For reference materials when working with buildspec.yml, books on Amazon can also be helpful.
Pricing
CodeBuild pricing is pay-as-you-go based on build execution time. Per-minute rates are set for each compute type (small, medium, large, 2xlarge), and you are not charged when builds are not running. A free tier of 100 build minutes per month is included. Choosing ARM-based instances can reduce build costs by approximately 20% compared to x86.
Things to Watch Out For
- Place buildspec.yml at the root of your repository and version-control it so you can track changes to your build steps
- Enabling build cache storage in S3 can significantly reduce the time spent on npm install or pip install
