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7/9/2026
Deploying a real-time multiplayer game on Railway

Deploying a real-time multiplayer game on Railway

Short summary

A developer shares lessons deploying Old Light, a real-time browser strategy game, on Railway. The article covers why serverless fails for long-lived WebSocket connections, how to handle version skew between frontend and API deploys using commit-SHA health checks, and practical gotchas around build order, TypeScript assets, and proxy configuration. Not AI-related.

  • •Railway supports long-lived processes needed for socket.io, unlike serverless
  • •Version skew between frontend and API solved via commit-SHA health checks
  • •Practical tips on monorepo build order, asset copying, and proxy settings

Generated with AI, which can make mistakes.

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