Open-Source Rust Proxy Aims to Add Tenant Isolation Layer for PostgreSQL

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A developer has introduced Agata Proxima, a PostgreSQL security platform built around an open-source proxy engine written in Rust. The tool sits between a multi-tenant SaaS application and its database to help prevent cross-tenant data leaks caused by missing filters, faulty authorization checks, or misconfigured policies. It is intended to complement, not replace, existing measures such as application-level authorization and PostgreSQL Row-Level Security. Beyond the engine, the platform offers tenant policy management, access verification, activity monitoring, and audit records. The author is seeking feedback from PostgreSQL and tenant-isolation practitioners on concerns like performance overhead and operational complexity.

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