The Core Defensibility MoatZero Cache-Loss RLS Engine

Unified ABAC & Cached Security View Compiler

Native DAB and relational engines deactivate response caching when session variables (sp_set_session_context) are invoked. Meynos compiles dynamic, deterministic security views with JWT claims baked into SQL predicates—preserving sub-20ms L1/L2 caching without cross-tenant leakage.

Simulate JWT Claims Context:

Role:

Tenant:

Native DAB / SQL Server RLS (Disabled Cache)

Latency: 850ms - 3,200ms

Executing session context forces every request down to cold lakehouse Parquet storage:

-- 1. Mutate Session Context on every request
EXEC sp_set_session_context 
  @key = N'tenant_id', 
  @value = 'tenant-apac-009';

-- 2. WARNING: DAB Engine turns off L1/L2 cache!
-- 3. Un-cached Lakehouse Scan against OneLake / PolyBase:
SELECT * FROM delta_lake.sales_orders 
WHERE tenant_id = SESSION_CONTEXT(N'tenant_id');
-- Latency Penalty: 1,420ms (Cold Start)

❌ Result: FusionCache disabled to avoid cross-tenant contamination. Query concurrency collapses under enterprise load.

Meynos Dynamic ABAC Compiler (Active Cache)

Latency: < 14ms (L1 Hit)

Meynos compiles deterministic secure views with partition-hashed cache namespaces:

-- Meynos Dynamic Compiled View for [Sales_Rep]
CREATE OR ALTER VIEW [governed_views].[vw_sales_orders_sales_rep]
AS
SELECT 
    order_id,
    order_date,
    total_amount,
    '***REDACTED***' AS credit_card_hash,
    region,
    tenant_id
FROM [delta_lake].[sales_orders]
WHERE tenant_id = 'tenant-apac-009'
  ;

-- Cache Key: SHA256("tenant-apac-009:Sales_Rep:sales_orders")

✅ Result: 100% Zero-Trust ABAC isolation with full L1/L2 Redis caching preserved. Sub-20ms SLA guaranteed.