Ayou can do so in a middleware
Asee here how the enforceUserIsAuthed is done as an example https://github.com/t3-oss/create-t3-app/blob/next/cli/template/extras/src/server/api/trpc/with-auth-prisma.ts
GitHub
The best way to start a full-stack, typesafe Next.js app - create-t3-app/with-auth-prisma.ts at next · t3-oss/create-t3-app
NYou’ll want a singleton for that
NBut it’s possibly a bad idea to make your api stateful
NCaching can be okay
NBut if you scale out then it’s best to use a service which is outside your api but inside your control