How I Structured User Data for My AI SaaS

The author explains why sessionStorage fails for production SaaS apps due to its tab-scoped, non-persistent nature, and describes migrating to Postgres for user data persistence. Postgres was chosen over MongoDB primarily for referential integrity and cascade deletes, ensuring clean data when users are removed. The schema uses Clerk for identity management bridged to Postgres via clerkId, with tables for users and resumes linked by foreign key constraints.