Universal Caching Demo

[brandonSc]

🌍 Universal Caching by Earthly

This Pull Request demonstrates the awesome performance of Earthly's Universal Caching algorithm in Github Actions. Earthly automatically detects cache hits based on git metadata and inferred inputs of each build command.

Any time Earthly detects a re-run of the same build step, the execution of that step is skipped entirely, and its outputs are instantly restored from cache.

🚀 2-20x Faster Builds

By switching your existing Github Actions builds to Earthly, you can expect a 2-20x improvement in average build times. Faster builds mean less time waiting for CI/CD, easier debugging, lower compute costs, and more money in your pocket.

For example, the run time of a go build step in this PR went from 2 minutes and 38 seconds un-cached to only 3 seconds fully cached.

⚙️ How to Switch

Switching to Earthly + Universal Caching is easy, and you can be up-and-running with just a couple of changes:

1. Sign up for Earthly and launch a Satellite with Github Actions enabled
2. Change the runs-on statement to point to your Satellite
3. Write ucacher before every command that can be cached

⚠️ Note

Universal Caching is still in alpha stages of development. There are many known limitations and bugs.