Migration field guide
Heroku to Railway: deploy, data and rollback
A successful web deployment is only one part of moving an application. Verify data, jobs, secrets and domain behaviour too.
Edited by Clinton Feyisitan · Documentation checked
Review scope: Official documentation and field mapping reviewed. The steps below are a proposed validation procedure, not a completed native migration or a measured completion-time claim.
What the documented route supports
Railway’s Heroku guide covers a simple web service, deploying local code with its CLI and importing Heroku environment variables. It explicitly treats database migration as separate, more involved work. The guide’s Procfile support is limited to a single process; inventory workers rather than assuming a multi-process application transfers unchanged.
Map before importing
| Source | Destination | Check |
|---|---|---|
| Web process | Railway service | Verify start command, port and health check. |
| Workers / scheduler | Separately configured services | Confirm concurrency and only one active scheduler. |
| Environment variables | Destination variables | Check names and scope without putting secret values in logs. |
| Database / add-on | Explicit replacement or migration | Validate data, connection pooling, backups and extensions. |
A controlled migration
- Inventory the web process, workers, scheduled jobs, add-ons, databases, storage, environment variables and custom domains. Record which service owns each dependency.
- Create an isolated Railway project and deploy the service following the official CLI guide. Use its temporary domain before changing DNS.
- Copy the required variables through the supported import flow. Check that production integrations cannot send duplicate messages or process real work during the test.
- Migrate database and object data under their own backup and restore procedure. Recreate workers and schedules, then validate a complete application journey.
Acceptance checks
Record the result and evidence for each check. Stop the cutover if a required check fails.
- Test login, a read/write operation, a background job and a failure path.
- Compare database counts and inspect logs for missing configuration.
- Verify TLS, callbacks, redirects and DNS before the cutover.
Budget for overlapping plans, required features, seats, storage or usage, and the time to reconcile exceptions. Check the current provider quote; this guide does not reuse historical subscription prices.
Keep a way back
Keep the known-good Heroku deployment and database backup. If the destination accepts writes, reconcile them before restoring the old route. Disable duplicate workers before switching traffic back.
Official sources
Source availability and account UI can change. Native account execution remains untested in this guide.
Earlier editorial risk estimate
This historical rating has not been recalculated by this documentation review.