RailwayDocs

railway scale

Scale a service by configuring the number of instances in different regions.

Usage

Options

FlagDescription
-s, --service <SERVICE>Service to scale (defaults to linked service)
-e, --environment <ENV>Environment the service is in (defaults to linked environment)
--jsonOutput in JSON format
--<REGION>=<N>Set the number of instances for a specific region

Dynamic region flags

The available region flags are fetched dynamically from Railway. Common regions include:

  • --us-west1
  • --us-east4
  • --europe-west4
  • --asia-southeast1

Examples

Interactive mode

Prompts you to select regions and instance counts.

Scale to specific regions

Scale specific service

Behavior

After updating the region configuration, the service is automatically redeployed to apply the changes.