I have compiled a little bit approaches: Approach 1 Client Side: /services updateUserRewardWithSomeComplexOperation(){ // fetch all data via Supabase SDK // call api to get the response with updated data based on business logic computation // update the data via Supabase SDK } Server Side APIs can be written in Next.js Server of a particular app APIs can be written in a separate Express Server (shared with all the apps) Approach 2 Use Postgres Functions to compute business logic directly in the DB Refer: https://supabase.com/docs/guides/database/functions https://supabase.com/docs/reference/javascript/rpc Need to write functions directly in Postgres inside the SQL section of Supabase Dashboard Support for Function Hooks (call a function automatically when a particular row/col changes) Need to write logic in SQL and not JS Can execute directly on client side via JS SDK Please let me know your views upon this.

A blog post about using JavaScript here https://chiubaca.com/using-javascript-to-write-postgresql-functions-1ac/