Expert PlanetScale Code Review for AI-Built Apps
PlanetScale is a serverless MySQL platform with branching and zero-downtime schema changes. AI tools target it for managed databases, but often misconfigure connection handling, branch workflows, and query performance.
Common PlanetScale issues we find
Real problems from PlanetScale codebases we've reviewed.
Foreign key constraint workarounds
PlanetScale doesn't support traditional foreign keys. AI-generated code creates them anyway, causing deployment failures, or skips referential integrity entirely.
Connection string exposure
PlanetScale database URLs with credentials committed to source control or embedded in client-side code.
Missing connection pooling
Serverless functions opening new connections on every invocation instead of using PlanetScale's connection pooling or @planetscale/database driver.
No branch workflow for schema changes
Schema changes deployed directly to the main branch without using PlanetScale's deploy request workflow, risking production data.
Unbounded SELECT queries
Queries without LIMIT clauses that return entire tables, causing excessive row reads and billing spikes on the usage-based plan.
PlanetScale production checklist
Key checks before deploying your PlanetScale app.
Database credentials stored in environment variables
Connection pooling configured for serverless environments
Application-level referential integrity where foreign keys are needed
Deploy request workflow used for schema migrations
All queries use LIMIT and pagination
Indexes on frequently queried columns
Database branches created for development and staging
Not sure if your app passes? Our code audit ($19) checks all of these and more.
Our PlanetScale services
Security Review
Deep security analysis of your application — from API endpoints to database access.
Deploy & Ship
From local development to production deployment.
Performance
Identify and fix performance bottlenecks — slow page loads, laggy interactions, and expensive operations.
Infrastructure
Databases, APIs, auth systems, email, file storage — the backend services that power your application.
AI tools that generate PlanetScale code
Start with a self-serve audit
Get a professional review of your PlanetScale project at a fixed price.
Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 checks
- SSL/TLS analysis
- Security headers
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerabilities
- Code quality review
- Dependency audit
- AI pattern analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
How it works
Tell us about your app
Share your project details and what you need help with.
Get a clear plan
We respond in 24 hours with scope, timeline, and cost.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
Why did PlanetScale reject my schema migration?
Most commonly because of foreign key constraints, which PlanetScale doesn't support. We refactor your schema to use application-level integrity checks and PlanetScale-compatible patterns.
Is PlanetScale good for my app?
PlanetScale is excellent for apps that need managed MySQL with zero-downtime deploys and horizontal scaling. It's great for serverless architectures. We help configure it properly for your stack.
How do I manage PlanetScale costs?
Row reads are the primary cost driver. We audit your queries, add missing indexes, implement pagination, and optimize your access patterns to keep costs predictable.
Related resources
Need help with your PlanetScale project?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.