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EU hosting → the United Kingdom

Ruby on Rails Hosting in the United Kingdom

UK Rails teams running on Heroku, Render or AWS face a familiar squeeze: USD billing, US operator, and a Schrems II conversation every renewal. Hostim runs Rails in Falkenstein under a German operator. UK GDPR + EU adequacy = no extra paperwork for UK customers.

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# docker-compose.yml
services:
  web:
    image: my-rails-app
    environment:
      - RAILS_ENV=production
      - RAILS_LOG_TO_STDOUT=1
  db:
    image: postgres:16
  • 🇪🇺 Hosted in Germany, GDPR by default
  • 🐳 Run Docker apps (Compose supported)
  • 🗄️ Built-in MySQL, Postgres, Redis & volumes
  • 🔐 HTTPS, metrics, and isolation per project
  • 💳 Per-project cost tracking · from €2.5/month

Why Ruby on Rails on EU bare metal for the United Kingdom

The UK Rails community is large and historically Heroku-heavy. Post-Brexit, the legal answer for hosting is unchanged: UK GDPR mirrors EU GDPR and the EU has confirmed UK adequacy through 2031. So an EU-operated Rails host is a perfectly fine landing place for UK SaaS. Hostim runs Puma + managed PostgreSQL + Active Storage volume + a Sidekiq app, all in one project. Cost is usually lower than equivalent Heroku Performance dynos. Latency from London to Falkenstein is 22 ms — one extra round-trip vs a London host, almost never user-visible.

Latency, residency and British regulators

Latency. Typical RTT from London to our Falkenstein region is around 22 ms. After Brexit the UK kept GDPR almost unchanged as UK GDPR. EU adequacy was renewed in 2025, so a UK app hosted in Germany serves UK users without extra legal paperwork. Latency from London to Falkenstein is typically 22 ms.

Regulator. ICO (Information Commissioner's Office).

Local law. UK GDPR and the Data Protection Act 2018. Hostim is operated by HOSTIM.DEV UG, a German company, with all data in Falkenstein, Germany — there is no transfer outside the EU for application data.

Local alternatives you may have considered: Krystal, Civo, Linode (now Akamai), Mythic Beasts.

How Hostim runs Ruby on Rails

Rails hosting today usually means a Puma server behind a reverse proxy, with PostgreSQL and a volume for Active Storage uploads. The Heroku stack model works fine — but the price does not, especially after the Heroku EU sunset moves teams to dedicated dynos.

Deploy model

Run rails db:migrate as a release command on each deploy. Hostim builds your Rails Docker image, attaches managed PostgreSQL, and mounts a volume for Active Storage. Background jobs (Sidekiq, GoodJob) run as a second app in the same project.

Common pitfalls

Active Storage with local disk silently breaks when the container restarts. The fix on Hostim is a persistent volume mounted at storage/, or you can configure S3-compatible object storage.

Typical env vars

RAILS_ENV, RAILS_MASTER_KEY, DATABASE_URL, REDIS_URL

FAQ

Is Hostim a Heroku alternative for UK teams?

For Rails apps, yes. Same deploy model (Git push + release commands for migrations), managed PostgreSQL and Redis, custom domains with HTTPS, and significantly lower steady-state cost.

What about the ICO and UK GDPR?

UK GDPR is almost identical to EU GDPR. The ICO accepts EU-hosted services for UK data because the EU has confirmed UK adequacy. No SCCs are required for UK to EU transfers.

How is latency from London?

Typical RTT from London to Falkenstein is 22 ms. For a Rails app that mostly hits its own database, this is one extra round-trip — usually invisible to users.

Does Hostim run Sidekiq jobs separately?

Yes. Add a second app in the same project running bundle exec sidekiq as the command. It shares the same image and the same DATABASE_URL/REDIS_URL.

Related pages

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