Your data is yours.
Period.
EternalEngine enforces tenant isolation at the PostgreSQL row level — not just application code. Even if there's a bug, your data cannot leak to another tenant. Separation is architectural, not optional.
Isolation enforced at every layer
EternalEngine's multi-tenancy is designed security-first — from schema to session.
PostgreSQL RLS
Row Level Security policies are attached directly to every table. The database engine enforces tenant boundaries — no application code can bypass it, even with a bug.
tenant_id on Every Query
Every database query automatically scopes to the authenticated tenant. The tenant_id comes from the session context set at login — never from user-controlled input.
Cross-Tenant Access: Impossible
Even a fully-compromised API key from Tenant A cannot read Tenant B's data. The RLS policy blocks it at the storage layer — the application never even sees the wrong rows.
Schema Isolation
Tenant configuration, custom fields, and metadata are scoped per tenant. There are no shared mutable state risks — each tenant's schema extensions are fully isolated.
Enterprise-grade isolation, built in from day one
Designed for organizations where data security is non-negotiable.
Enterprise-Grade Isolation
The same pattern used by enterprise SaaS leaders — enforced at the database engine, not just application middleware. Auditors understand it. Your InfoSec team will approve it.
Compliance-Ready
PostgreSQL RLS satisfies data segregation requirements for SOC 2, ISO 27001, and GDPR. Evidence of isolation is demonstrable and auditable — not a promise.
Zero Data Leakage
No application bug, misconfigured join, or developer mistake can expose one tenant's data to another. The constraint is structural, not procedural.
Common questions, straight answers.
What does tenant isolation mean here?
Every row of your data carries your tenant id and the database itself refuses to return rows for any other tenant, whatever the application asks.
Where does the tenant come from?
From your authenticated session, never from a URL, form field or header, so a request cannot claim to be another account.
Is it tested?
Yes. Cross-tenant tests run in CI against a real database on every change to prove one tenant cannot read or write another’s rows.
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