postgresql-schema-design

Design a PostgreSQL schema for multi-tenant microservices using a per-tenant schema strategy with standard table templates. Include UUID primary keys, TIMESTAMPTZ timestamps, JSONB fields, and B-tree or GIN indexes to enforce per-tenant isolation and scalable data models.

The best way to handle indexing in a multi-tenant PostgreSQL database is using B-tree indexes for equality and range lookups, GIN indexes for JSONB fields, and partial indexes to filter soft-deleted records efficiently.

You need table partitioning for multi-tenant PostgreSQL deployments when scaling per-tenant schemas to maintain query performance. Partitioning criteria are applied alongside standard table templates to manage large datasets across isolated tenant environments.

Avoid foreign key constraints in a schema-per-tenant PostgreSQL architecture because per-tenant isolation requires preserving referential integrity via the application layer. This strategy prevents cross-tenant coupling while maintaining clear inline documentation for data relationships.

Yes, this PostgreSQL schema design pattern explicitly targets PostgreSQL 18 on AWS Aurora. It applies schema-per-tenant isolation with tenant-aware connection routing to ensure consistent data models across the managed database environment.

A limitation of schema-per-tenant isolation in PostgreSQL is the reliance on the application layer to enforce referential integrity instead of database-level foreign keys. This requires careful inline documentation and consistent application logic to prevent data anomalies across tenants.