[Question] Routes Register Slowing Cold Start in Cloud Run

[brantian]

Hello!

I'm using Google Cloud Run to deploy my Express server, with routes generated by tsoa.

But I'm having an issue related to cold starts. When a new container is started, registering tsoa routes takes too much time and considerably slows the container startup time. Based on the profiling, it seems that importing the RegisterRoutes is the most time-consuming part.

Are there any approaches I could use to reduce the time it takes to import the RegisterRoutes method and register the routes while starting the Express server?

Thanks!

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Expected Behavior

Routes are registered fast and don't impact server cold starts.

Current Behavior

Importing the RegisterRoutes function and calling it takes 5 to 6 seconds, in the compiled version.

Context (Environment)

Version of the library: 6.2.1 Version of NodeJS: 18

• Confirm you were using yarn not npm: [ ]

[github-actions[bot]]

Hello there brantian 👋

Thank you for opening your very first issue in this project.

We will try to get back to you as soon as we can.👀