PlanetScale

PlanetScale brings git-style workflows to databases. Branch your database like you branch code, make schema changes without downtime, and scale horizontally when you need it. It's MySQL, but better.

Why Use PlanetScale

Database Branching: Create a branch of your database to test schema changes safely. When you're ready, merge it back to production. No more "hope this migration works" anxiety.

Non-Blocking Schema Changes: Deploy schema changes without locking tables or taking downtime. PlanetScale handles the complexity of online schema migrations automatically.

Built on Vitess: PlanetScale uses Vitess, the same technology that powers YouTube, Slack, and GitHub at massive scale. You start simple but can scale to billions of rows.

MySQL Compatible: It's real MySQL, so your existing tools, ORMs, and knowledge work. Prisma, TypeORM, Sequelize - they all work perfectly.

Key Features

• Database Branches - Branch, test, merge like git
• Deploy Requests - Review schema changes before applying
• Zero-Downtime Migrations - Schema changes without locking
• Automatic Backups - Daily backups with point-in-time recovery
• Connection Pooling - Built-in connection pooler
• Query Insights - See slow queries and optimize
• Horizontal Sharding - Scale beyond single server limits
• Revert Schema Changes - Undo migrations safely
• Read-Only Regions - Deploy replicas globally

Pricing for Solo Builders

Hobby (Free):

• 1 database
• 5 GB storage
• 1 billion row reads per month
• 10 million row writes per month
• Perfect for side projects and MVPs

Scaler ($29/month):

• 10 GB storage included
• 100 billion row reads per month
• 50 million row writes per month
• Production branches
• Automated backups

The free tier is generous enough to launch and validate your product. Upgrade when you have paying customers.

Perfect For

• Apps that need MySQL (not Postgres)
• Teams that want safer schema migrations
• Projects that might need to scale massively
• Developers who love git workflows
• Complex data models with lots of relationships
• Apps using Prisma or other ORMs

How Database Branching Works

# Create a branch from production
pscale branch create myapp dev-add-users

# Connect to your branch and make changes
pscale connect myapp dev-add-users

# Create schema changes (add columns, indexes, etc.)
# Test your app against the branch

# When ready, create a deploy request
pscale deploy-request create myapp dev-add-users

# Review the schema diff, then deploy
pscale deploy-request deploy myapp 123

# Schema changes applied with zero downtime

Code Example with Prisma

// .env
DATABASE_URL="mysql://..."

// schema.prisma
datasource db {
  provider = "mysql"
  url      = env("DATABASE_URL")
  relationMode = "prisma" // Important for PlanetScale
}

model User {
  id        String   @id @default(cuid())
  email     String   @unique
  name      String?
  posts     Post[]
  createdAt DateTime @default(now())
}

model Post {
  id        String   @id @default(cuid())
  title     String
  content   String   @db.Text
  userId    String
  user      User     @relation(fields: [userId], references: [id])
  createdAt DateTime @default(now())
}

// Use it
import { PrismaClient } from '@prisma/client'

const prisma = new PrismaClient()

const user = await prisma.user.create({
  data: {
    email: 'user@example.com',
    name: 'John Doe',
    posts: {
      create: [
        { title: 'My first post', content: '...' }
      ]
    }
  }
})

PlanetScale vs Supabase

Choose PlanetScale if you:

• Need MySQL specifically
• Want database branching workflow
• Need massive horizontal scaling
• Prefer to manage auth separately
• Love Prisma (works great together)

Choose Supabase if you:

• Prefer Postgres over MySQL
• Need built-in auth and realtime
• Want row-level security policies
• Need file storage included
• Want an all-in-one platform

Both are excellent. PlanetScale is pure database with amazing DX. Supabase is full backend platform with more features.

Integration With Other Tools

Works seamlessly with:

• Prisma - Best ORM for PlanetScale
• Drizzle - Type-safe SQL queries
• Next.js - Perfect for API routes
• Vercel - Automatic connection pooling
• Railway - Alternative deployment option

When to Choose Something Else

Consider alternatives if you:

• Need Postgres features (use Supabase or Neon)
• Need built-in auth/storage (use Supabase)
• Want cheapest option (use Railway with own DB)
• Need self-hosting (use standard MySQL)

Common Workflow

Development:

1. Create a development branch
2. Make schema changes on branch
3. Test with your app
4. Create deploy request
5. Review schema diff
6. Deploy to production

No More:

• Writing migration files manually
• Worrying about table locks
• Coordinating deploys with migrations
• Rolling back broken schemas

Tips for Solo Builders

• Use the CLI (pscale) for branching workflow
• Set relationMode = "prisma" in your Prisma schema
• Create a branch for each feature/migration
• Use deploy requests even when solo (good habit)
• Enable query insights to find slow queries
• Use the web console to explore data
• Connection strings are auto-generated, never commit them

The Boost Feature

PlanetScale has a secret weapon: Boost. It's a connection pooler and query cache that makes your app faster without code changes. Enable it in settings and your queries get cached automatically.

The Catch

PlanetScale doesn't support foreign key constraints at the database level (due to how Vitess works). You handle referential integrity in your application code or ORM.

Prisma makes this easy with relationMode = "prisma", which enforces relationships at the ORM level instead of the database level.

Schema Changes Example

-- Before (traditional MySQL - requires downtime)
ALTER TABLE users ADD COLUMN verified BOOLEAN DEFAULT false;
-- This locks the table, blocking reads/writes

-- With PlanetScale (zero downtime)
-- 1. Create a branch
-- 2. Run the ALTER on the branch
-- 3. Deploy request shows the diff
-- 4. Deploy applies changes online, no locks

The Verdict

PlanetScale makes MySQL feel modern. The branching workflow is game-changing for schema migrations. No more fear of breaking production with a bad migration.

The free tier is generous, the DX is excellent, and it scales to YouTube-level traffic if you ever need it. If you need MySQL and value developer experience, PlanetScale is the obvious choice.

The only real downside is no foreign keys at the DB level, but modern ORMs like Prisma handle this seamlessly.