Fly Answers More Questions

Summary

Fly Answers More Questions addresses three Fly usage questions: protection against malicious TCP connections that trigger runaway scaling, dedicated credentials for GitHub Actions, and selecting Dockerfiles in monorepos. For scaling abuse, Fly apps can impose per-region and global instance limits; requests beyond those limits are dropped, while networking protections are already in place. A configurable monthly maximum spend is described as in preview, and usage from an obvious DDoS or similar event may be waived. For continuous deployment, the suggested pattern is a dedicated user with a personal access token, added to a Fly organization so it can deploy to projects. For complex builds, updated flyctl adds deploy's --dockerfile option, allowing a selected Dockerfile instead of the default Dockerfile.

Takeaways

1. 1

   Fly apps support configurable per-region and global maximum instance counts; incoming requests beyond those limits are automatically dropped.

2. 2

   A configurable monthly maximum spend was coming soon and in preview, while usage from an obvious DDoS or similar event could be considered for waiver.

3. 3

   A dedicated deployment user can receive a personal access token, join a Fly organization, and deploy to its projects; flyctl also supports selecting a Dockerfile with --dockerfile.