Fly.io vs Pusher

Fly.io

Pusher

Fly.io · 14 features

• Auto Stop/Start — Machines auto-stop when idle, start on request (like scale-to-zero).
• Certs — Let's Encrypt + wildcard certs managed.
• Fly GPU — A100/L40S/A10 on-demand GPU machines.
• Fly Kubernetes (FKS) — Managed Kubernetes on Fly machines.
• Fly Machines — Firecracker microVMs. Start in <1s. Run any Docker image.
• Fly Postgres — Managed Postgres via Supabase partnership (2024). Also legacy self-run Postgres …
• fly-replay headers — Route request to another region at app level.
• Fly Volumes — Persistent SSD attached to a Machine. Encrypted at rest.
• Global Anycast — Single IP routes to the closest region automatically.
• LiteFS — Distributed SQLite with primary/replica across regions.
• Private Networks — 6PN WireGuard mesh. Connect machines across regions privately.
• Secrets — Encrypted env vars propagated to all regions.
• Tigris (partner) — S3-compatible storage for Fly apps. By partner.
• Upstash Redis (partner) — Managed Redis via Upstash.

Pusher · 11 features

• Beams — Push notifications for iOS/Android/Web with device interest groups.
• Beams Authenticated Users — Target users by auth user ID across devices.
• Channels — WebSocket pub/sub — realtime events, live updates, notifications.
• Channels Webhooks — Receive server-side notifications of channel activity.
• Client Events — Publish events from clients directly (triggered from browser).
• Debug Console — Live channel debugging dashboard.
• Encrypted Channels — End-to-end encrypted messages.
• Global Clusters — US, EU, AP-Southeast, etc. Pick nearest region.
• Presence Channels — Track who is online in a channel.
• Private Channels — Auth-required channels with server-signed tokens.
• Stats — Connection / message dashboards.