Phoenix Guide Best Databases for Phoenix (2026)
Compare the best database solutions for Phoenix. We review PostgreSQL options with Ecto ORM integration patterns.
Phoenix with Ecto provides powerful database abstractions. We've evaluated managed PostgreSQL services that work excellently with Elixir's concurrency model.
Pourquoi C'est Important
Ecto is designed for PostgreSQL with excellent support for advanced features. The right database choice affects connection pooling, availability, and developer experience.
Considérations Clés
Ecto ORM
Ecto is Phoenix's database library. Changesets, queries, migrations. Works best with PostgreSQL.
Connection Pooling
Ecto uses DBConnection pooling. Configure pool size per environment. Works with external poolers like PgBouncer.
PostgreSQL Features
Ecto supports PostgreSQL arrays, JSON, UUID, ranges. Use database features instead of application code.
Migrations
mix ecto.migrate runs migrations. Use in releases with Release.migrate/0. Ecto handles schema evolution.
Concurrent Operations
Elixir's concurrency works great with database connections. Size pool appropriately for your workload.
Nos Recommandations
Neon
Meilleur Serverless Excellent Support SDK OfficielNeon provides serverless PostgreSQL perfect for Phoenix. Branching for dev/prod. 512MB free. Scales to zero.
Standard Postgrex connection 
Supabase
Meilleur Tout-en-Un Excellent Support SDK OfficielSupabase PostgreSQL works great with Ecto. 500MB free. Get database plus auth, storage if needed.
Standard Postgrex connection 
Railway
Meilleur avec Hébergement Excellent Support SDK OfficielRailway provides PostgreSQL alongside Phoenix hosting. Unified deployment. $5/month credit.
railway add postgresql 
Fly.io
Meilleur avec Fly Excellent Support SDK OfficielFly Postgres for apps on Fly.io. Same region as your app. Good for Phoenix deployments on Fly.
fly pg create 
PostgreSQL
Meilleur Auto-hébergé Excellent Support SDK OfficielSelf-hosted PostgreSQL for full control. Ecto and Postgrex have excellent PostgreSQL support.
mix ecto.create Comparaison Rapide
| Service | TypeScript | Edge | Offre Gratuite | Temps de Configuration |
|---|---|---|---|---|
| Neon | none | — | 512MB | 5 min |
| Supabase | none | — | 500MB | 5 min |
| Railway | none | — | $5 credit | 5 min |
| Fly.io | none | — | 3 VMs free | 10 min |
| PostgreSQL | none | — | N/A | 30 min |
Démarrage Rapide
config :my_app, MyApp.Repo,
url: System.get_env("DATABASE_URL"),
pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10"),
ssl: true,
ssl_opts: [verify: :verify_peer, cacerts: :public_key.cacerts_get()]Modèles d'Intégration Courants
Neon + Phoenix
Serverless PostgreSQL with Ecto and automatic migrations.
Fly Postgres + Phoenix
Fly.io managed PostgreSQL with Phoenix app in same region.
Supabase + Realtime
Supabase PostgreSQL with optional realtime subscriptions.