Deploy your SQL app to Fly.io
Step-by-step deployment help for SQL apps on Fly.io. We fix SQL-specific deployment issues, configure Fly.io, and get your app live. From $19.
SQL issues we fix before deploying
Common SQL problems that affect Fly.io deployments.
SQL injection from string concatenation
Building queries by concatenating user input directly into SQL strings instead of using parameterized queries, enabling full database compromise.
Missing indexes on queried columns
Queries filter and join on columns without indexes, causing full table scans that slow exponentially as data grows.
SELECT * in production queries
Fetching all columns when only a few are needed, wasting bandwidth, memory, and preventing covering index optimizations.
N+1 query patterns
Executing one query per row in a loop instead of a single JOIN or batch query, multiplying database round trips by the number of records.
Fly.io deployment issues we check for
Common Fly.io problems that break SQL apps in production.
Dockerfile missing or misconfigured
Fly.io requires a Dockerfile for deployment. AI tools that scaffold without one force flyctl to auto-generate a suboptimal Dockerfile that misses build steps.
Volume only available in a single region
Fly volumes are pinned to one region. Multi-region deployments try to access a volume that doesn't exist in other regions, causing crashes.
Machine restarts losing in-memory state
AI-generated apps store session data or caches in memory. Fly machines can restart or migrate, wiping all in-memory state without warning.
Internal DNS resolution failing between services
Services within a Fly organization communicate via <app>.internal hostnames, but AI-generated code hardcodes localhost or public URLs.
Start with a self-serve audit
Get a professional review of your SQL project before deploying to Fly.io.
External Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 vulnerability check
- SSL/TLS configuration analysis
- Security header assessment
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerability analysis
- Code quality review
- Dependency audit
- Architecture review
- Expert + AI code 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.
Expert + AI audit
A human expert assisted by AI reviews your code within 24 hours.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
How do I deploy a SQL app to Fly.io?
We handle SQL deployments to Fly.io end to end. Start with our code audit ($19) to identify deployment blockers specific to your SQL project, then we configure Fly.io, fix issues, and get your app live in production.
What SQL issues affect Fly.io deployments?
SQL projects commonly have sql injection from string concatenation and missing indexes on queried columns. On Fly.io, these combine with dockerfile missing or misconfigured and volume only available in a single region to cause deployment failures.
Can SpringCode deploy my SQL project to Fly.io?
Yes. We specialize in deploying SQL applications to Fly.io. We audit your codebase for SQL-specific issues, configure Fly.io correctly, and handle the full deployment so your app runs reliably in production.
What does SQL deployment to Fly.io cost?
Our code audit ($19) identifies all Fly.io deployment blockers in your SQL project. Full deployment assistance is scoped with a fixed quote after the audit — no hourly billing or surprise charges.
Related resources
Other techs on Fly.io
Deploy SQL elsewhere
Need help deploying SQL to Fly.io?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.