VYAVASTHA
CORE
A production-ready, multi-tenant SaaS architecture enforcing absolute data isolation through backend-issued JWTs, dynamic ORM filtering, and immutable audit logs.
The Challenge
SaaS Data Leaks
Destroy Companies
In a rushed B2B environment, simple coding errors can expose one enterprise's data to another. Traditional architectures rely on developers manually adding `WHERE tenant_id = ?` clauses to every query—an unreliable approach that guarantees eventual failure.
Application-layer filtering is prone to human oversight.
Lack of immutable audit trails hinders compliance.
Weak authorization layers make role escalation too simple.
The Architecture
Zero-Trust Isolation
Vyavastha mitigates these risks at the root. Expanding on the "StabilityOS" skeleton, this system employs Cryptographic Tenancy. It enforces isolation automatically via SQLAlchemy events and validates access via hardened HS512 JWT claims, eliminating the need for trust.
TenantScopedModels automatically filter queries dynamically.
Granular Role-Based Access Control (RBAC) via dependencies.
Zero-knowledge middleware completely ignores client headers.
Automated mutation tracking via the @audited decorator.
Architecture & Stack
Enterprise-grade infrastructure forged in Python.
Core Service
FastAPI, Python
High-performance async API orchestrating the logic layer.
Data Abstraction
SQLModel, Alembic
Dynamic ORM filtering targeting PostgreSQL databases.
Authorization
RBAC + HS512 JWTs
Dependency-injected security models and role checks.
Audit Logging
@audited Tracker
Immutable background tracking for all mutations.