Data Infrastructure · Harborline Analytics

Multi-Tenant Cloud Data Control Plane

A secure AWS + Supabase control plane for multi-tenant analytics workloads—typed APIs, role-based access, and database patterns built for growth.

Key deliverables

  • Multi-tenant AWS topology
  • Supabase RLS data model
  • Typed API layer
  • Observability & alerting

Timeline

12 weeks · Architecture → Hardening

3× query throughput with tenant-isolated security boundaries.

Tech stack

AWSSupabasePostgreSQLTypeScript

The Challenge

Shared schema, shared risk

Harborline’s early stack mixed ad-hoc APIs and a single shared database schema. As customers grew, latency spiked and tenant isolation became a compliance risk.

Architecture & Solution

Tenant-safe cloud data plane

ApexVex designed a multi-tenant architecture on AWS with Supabase Postgres, row-level security, and a typed API layer. Indexing strategy, connection pooling, and observability were tuned so teams could ship features without fighting the data plane.

Engineering decisions

  • Postgres RLS for strict tenant isolation
  • Indexed query paths and connection pooling
  • Typed APIs with role-based access control
  • AWS-aligned observability and rollback paths

Results & Impact

Measured outcomes that matter

3× query throughput with tenant-isolated security boundaries.

Query throughput

-54%

p95 API latency

RLS

Tenant isolation

-70%

Incidents / quarter

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