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Is there a way to split a trpc api across multiple lambdas ?

AEAhmed Eid

8/19/2023

How do I go about splitting my TRPC api across multiple lambdas, such that each lambda would load the minimum code it needs to run, (ideally the frontend should not be affected )

Ssachin

8/19/2023

see this example https://github.com/trpc/trpc/tree/main/examples/soa

AEAhmed Eid

8/19/2023

hmm, interesting but probably not the best approach IMO.

Ssachin

8/19/2023

if you think there’s a better approach, feel free to do a PR

AEAhmed Eid

8/20/2023

I'm not sure, I think lazy loading routes would be a much better approach than this, would you agree ?

AEAhmed Eid

8/20/2023

I had an idea which looks to be working, I'm using SST. I have a lambda per router. and I have a combing router ( fake ) which just exports the type for the frontend. I have attached some screenshots.

AEAhmed Eid

8/20/2023

let me know what you think ?

AEAhmed Eid

8/20/2023

actouer routes sould look like this

AEAhmed Eid

8/20/2023

each router has 2 lambdas, 1 for queries and another for mutations. the routes trick doesn't seem to be working ...

Ssassythesasquatch_

8/22/2023

Did you end up finding a solution to this, also using a similiar sst setup

Mmedv

8/29/2023

Need to explore this pretty soon as it is a non-starter for us and your idea looks pretty good. Very curious to hear what did not work and what you are doing now.

AEAhmed Eid

9/11/2023

@sassythesasquatch_ pause looking into this for a while, will continue investigating. @medv I believe trpc dot seperator was a blocker for me https://trpc.io/docs/rpc#accessing-nested-procedures it's not compatible with api gateway. it just need to be a /

Mmedv

9/13/2023

Thanks for responding. We aren't looking to host these in separate lambdas on separate endpoints, instead the modularization will occur with nestjs lazy loaded modules. I'd imagine the process for us will be slightly different as we do need the full router to be present at runtime, except one that is capable of mapping the request shape to the appropriate router path, at which point the lazy loading will occur. If we do get to this, I will write back here in the future. Relevant: https://github.com/trpc/trpc/issues/4129

AEAhmed Eid

9/14/2023

lazy loading routers for TRPC would be an ideal solution for us too.

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