What downsides are there to creating many middleware?

[schester44]

I want to do request body validation and parsing, similar to inputValidator, except for server routes.

My plan is to use a factory to generate a middleware per server route.

Something along the lines of this:

function inputBodyValidator<T>(schema: z.ZodSchema<T>) {
  return createMiddleware({ type: "request" }).server(
    async ({ request, next }) => {
      const body = await request.json().catch(() => ({}));
      const result = schema.safeParse(body);

      if (!result.success) {
        throw json(
          {
            error: "Invalid request body",
            details: result.error,
          },
          { status: 400 }
        );
      }

      return next({
        context: { parsedBody: result.data },
      });
    }
  );
}

What sort of performance implications will this have? Assuming there are 100+ of these middleware?

And is there a better way to handle this ?