tRPC•6mo ago

File uploads / downloads

https://github.com/trpc/examples-next-formdata I found this, does this mean it's possible to have file uploads and downloads with trpc now? Does it use chunking or does it put everything into memory.

GitHub

GitHub - trpc/examples-next-formdata

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DawsonOP•6/20/25, 2:09 AM

I will need to handle file sizes up to 10gb

DawsonOP•6/20/25, 2:12 AM

cc @Shreyas

Shreyas•6/20/25, 2:13 AM

https://tenor.com/view/watching-popcorn-eating-scared-watch-gif-17211195

Tenor

Nick•6/20/25, 8:21 AM

Yes https://trpc.io/docs/server/non-json-content-types

Non-JSON Content Types | tRPC

In addition to JSON-serializable data, tRPC can use FormData, File, and other Binary types as procedure inputs

Nick•6/20/25, 8:22 AM

However it's not appropriate to upload potentially large files this way, for that you should do it the "right" way, which means generating an upload link via a host like S3 and having the browser upload directly to it

Nick•6/20/25, 8:23 AM

You don't want one file upload overloading your server for all other users, and 10gb risks doing this

Nick•6/20/25, 8:24 AM

It may be fine for smaller projects though, just you could end up spending a lot more on hosting in network bandwidth and potentially RAM usage

NNick However it's not appropriate to upload potentially large files this way, for tha...

DawsonOP•6/20/25, 1:15 PM

This has to go directly to the file system

DawsonOP•6/20/25, 1:15 PM

it's writing to the local file system inside of a docker container

DawsonOP•6/20/25, 1:16 PM

Would it still be "fine" ?

Nick•6/20/25, 1:23 PM

Most likely fine if it’s a small use case

DawsonOP•6/20/25, 3:48 PM

It's no different than implementing it myself with something like express, hono, elysia, right?

Nick•6/21/25, 10:07 AM

No different, exact same best practices apply

DawsonOP•6/22/25, 4:55 PM

thank you