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Fly.io Deployment

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Fly.io is a PaaS for deploying Docker containers globally with automatic redundancy. You push code, Fly.io builds it, deploys to 30+ edge regions, and manages databases, SSL, and scaling. Developers earn 70-80k USD junior, 130-160k senior (for Fly.io-specialized roles). Learning deployment to Fly.io takes 1-2 weeks if you know Docker. Sits between Heroku (simpler, more expensive) and AWS (more complex, more control). Scarcity: Fly.io is popular but younger; 2-3x salary premium for specialists vs generalists. Adoption accelerating in 2026.

Vad är Fly.io Deployment

Fly.io is a modern PaaS (Platform as a Service) that lets you deploy Docker containers globally. You write a Dockerfile, push code, and Fly.io automatically builds, containerizes, and deploys to 30+ edge regions worldwide. It handles scaling, SSL, domain management, and database hosting. Unlike traditional hosting, Fly.io runs your app close to users (edge computing), reducing latency. You get global redundancy automatically, if one region fails, requests route to others.

🔧 VERKTYG & EKOSYSTEM
Fly.io CLI (flyctl)Docker containersfly.toml configurationFly.io Postgres and SQLiteFly.io RedisFly.io VolumesHealth checksAutomatic scalingEnvironment variablesSecrets management

💰 Lön per region

OmrådeNybörjareMidErfaren
USA$72k$130k$185k
UK£45k£80k£120k
EU€50k€85k€130k
CANADAC$70kC$125kC$180k

🎯 Karriärer som använder Fly.io Deployment

Devops Engineer

❓ Vanliga frågor

Why use Fly.io instead of Heroku?
Fly.io is 5-10x cheaper than Heroku for equivalent capacity. You get more control (Dockerfile, volumes). Heroku is simpler if you want zero ops. Fly.io is cheaper and more flexible if you're willing to learn Docker.
Can you run databases on Fly.io?
Yes. Fly.io offers managed Postgres and SQLite. No managed MySQL or MongoDB (yet). For other databases, you can run them in containers (not recommended for large DBs). Most teams use external databases (Supabase, PlanetScale) with Fly.io app hosting.
How does Fly.io handle failover and redundancy?
Fly.io runs your app in multiple regions (configurable). If one region fails, traffic routes to others automatically. No multi-region database setup needed unless you want that (complex).
What's the typical cost for a Fly.io deployment?
$5-50/month for simple apps. Basic tier is $5/month (shared CPU). Dedicated CPU is $15+/month. Postgres database adds $10-50/month. Still cheaper than Heroku by 5-10x.
Can you use custom domains on Fly.io?
Yes. Bring your domain, update DNS records. Fly.io issues free SSL certificates automatically. Very smooth process.

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