What the Architecture Covers
Schema modelling
Normalized tables for tenants, products, orders and invoices, with foreign keys and check constraints that protect data integrity.
Multi-tenancy
Tenant-scoped keys and filtering so every query is isolated per customer, without duplicating databases.
Indexing strategy
Composite and partial indexes chosen from real query patterns and verified with EXPLAIN ANALYZE.
Query optimization
Removing sequential scans, N+1 queries and heavy joins so hot endpoints stay in the low milliseconds.
Safe migrations
Versioned, reversible migrations (Alembic or Django) that run automatically in the CI/CD pipeline.
Redis caching
Redis for hot reads, rate limits and job queues, with explicit invalidation rules.
Tools & Stack
- PostgreSQL
- Redis
- SQLAlchemy
- Alembic
- Django ORM
- pgvector
In Practice
Applied in the Mobileriz multi-marketplace backend: PostgreSQL models sellers, catalogs and orders, with Redis for caching, rate limits and jobs.
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