Fly.io pricing: $1.94/mo minimum for Rust (256MB VM); official Axum deployment guide
Source documentation Strength strong
Fly.io shared-cpu-1x 256MB: ~$1.94/month running 24/7. Rust web servers use ~20MB memory for 13K rps. Docker images ~80MB. Rust apps genuinely run on 256MB instances where Node.js/Python often cannot. IPv4 address: $2/month extra. 3-instance production: ~$20/month max.