What is Fly.io?

Fly.io lets developers deploy web applications and AI services on virtual machines, with regional infrastructure, persistent storage, and managed databases. It suits startups and businesses seeking control over deployment and alternative to vercel.

Who should use Fly.io?

  • You want to deploy a web application close to users in multiple geographic regions.
  • You are a solo founder who wants to deploy production applications without managing physical servers.
  • You need persistent volumes and control over the runtime environment for stateful applications.
  • You want to run Docker-based applications with configurable CPU, memory, networking, and deployment regions.
  • You are building applications that need background workers, private networking, or multiple coordinated services.

Key Features of Fly.io

  • Fly Machines run applications in lightweight virtual machines with configurable CPU and memory.
  • Deploy applications to multiple regions using Fly's global infrastructure.
  • Fly Launch detects application configurations and generates deployment settings.
  • Persistent Volumes provide local storage that survives Machine restarts.
  • Fly Managed Postgres provides managed PostgreSQL databases with backups and replication options.
  • Fly Proxy routes incoming traffic to application Machines and supports automatic HTTPS.
  • Private networking connects applications and services within Fly's internal network.
  • Fly.io supports Docker images and configurable application deployment through fly.toml.

Integrations Supported by Fly.io

DockerGitHub ActionsTerraformGitHub

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