Quick answer: Railway has multiple independent constraints. Match the exact plan, model, runtime, invocation mode, or server configuration shown in each row.
Current documented limits
| Constraint | Current value | Scope | Verified source |
|---|---|---|---|
| persistent volume capacityPaid plans can resize, and Pro offers a self-serve path up to 1 TB. | Free/Trial: 0.5 GB; Hobby: 5 GB; Pro: 50 GB | Plan dependent | RailwayAug 22, 2026 |
| paid volume resizeThe standard Pro volume size is lower and can be expanded on paid plans. | Pro self-serve up to 1 TB | Pro | RailwayAug 22, 2026 |
How to apply Railway limits safely
The monitored baseline covers persistent volume capacity, paid volume resize. Treat these as separate constraints rather than one platform-wide capacity number: a workload can fit one row and still fail another because the plan, model, endpoint, runtime, region, invocation mode, or account scope differs.
- Match the production workload to the exact scope printed beside each value and confirm it in the active Railway console, configuration, or response headers.
- Measure the serialized request, token volume, duration, concurrency, storage, or connection demand at realistic percentiles, then preserve headroom for bursts and retries.
- Check every adjacent layer—client, SDK, gateway, proxy, queue, database, and downstream service—for a smaller effective limit before changing architecture.
Specific limit pages
These pages exist because the constraint has a distinct implementation or troubleshooting intent. Closely related keyword variations stay consolidated.
Railway Volume Size Limits by Plan
Railway Volume Size Limits by Plan, verified against Railway's official documentation with scope, implementation impact, caveats, and a direct check.
Railway Volume Resize Limits
Railway Volume Resize Limits, verified against Railway's official documentation with scope, implementation impact, caveats, and a direct check.