We design, build, and hand over mission-critical bespoke software systems with 100% source code, database, and infrastructure ownership. Here is the technical blueprint that powers our high-throughput vertical e-commerce engines, B2B wholesale portals, and automated ERP integrations.
Generic multi-tenant platforms (Shopify, BigCommerce, Salesforce) introduce architectural compromises that inevitably create security liabilities, financial reconciliation drift, and operational bottlenecks.
In naive multi-tenant systems, tenant filtering is left to application code. A single missing WHERE tenant_id = ? clause in a reporting query or microservice leaks competitors' private pricing and customer lists. We enforce tenant boundaries strictly in the PostgreSQL kernel via Row-Level Security (RLS).
CRITICAL RISKMaking direct HTTP calls to ERPs (Logo, Mikro, Netsis, SAP) inside user requests causes catastrophic inconsistencies. If a network socket drops midway, did the invoice book? Repeating the request duplicates debt; ignoring it drops stock decrements. We eliminate this with the Transactional Outbox pattern.
INTEGRATION HAZARDJavaScript IEEE-754 numbers (0.1 + 0.2 !== 0.3) introduce rounding drift across thousands of line items, causing auditing penalties. We enforce integer base units (BigInt kuruş/cents) and numeric(15,4) precision with line-item half-up rounding.
FINANCIAL DRIFTGeneric SaaS platforms impose perpetual 0.5%–2.0% transaction taxes, rate-limited APIs, and deny direct SQL database access. We deliver 100% intellectual property transfer: you own the Git repo, PostgreSQL schemas, and Docker/Terraform manifests.
VENDOR LOCK-INMathematical tenancy guarantees enforced by the database engine. Every query automatically inherits tenant isolation without relying on developer discipline.
| Order ID | Tenant UUID | Company / Dealer | Total (BigInt Kuruş) | Kernel Status |
|---|---|---|---|---|
| #ORD-9801 | a1b2-c3d4-apex | Borusan Oto Yetkili Servis | ₺142.500,00 | PASSED_RLS |
| #ORD-9802 | a1b2-c3d4-apex | Mengerler Ticaret A.Ş. | ₺89.200,00 | PASSED_RLS |
-- 1. Enforce Mandatory Tenant Column & RLS on Entity
ALTER TABLE orders ENABLE ROW LEVEL SECURITY;
-- 2. Revoke Direct Client Access (Zero Client-Side Mutations)
REVOKE ALL ON orders FROM anon, authenticated;
-- 3. Kernel-Level Row Isolation Policy
CREATE POLICY tenant_isolation_policy ON orders
FOR ALL
USING (
tenant_id = current_setting('app.current_tenant_id', true)::uuid
);
-- 4. Hardened Security-Definer Mutation Function
CREATE OR REPLACE FUNCTION private.submit_order(...)
RETURNS orders
LANGUAGE plpgsql
SECURITY DEFINER
SET search_path = ''
AS $$
...
$$;Guaranteed at-least-once delivery with downstream idempotency. Never lose an order, double-book an invoice, or desynchronize warehouse inventory during ERP downtime.
Order + outbox_events row committed in single atomic block.
ACTIVEWorker locks event via pg_try_advisory_xact_lock to block race conditions.
PENDINGPayload signed with HMAC-SHA256 and deterministic idempotency-key.
PENDINGLogo / Mikro / Netsis / SAP acknowledgment with uncertain state defense.
PENDING// Atomic ACID Transaction: Business State + Outbox Event
await db.transaction(async (tx) => {
const order = await tx.insert(orders).values(orderData).returning();
// Outbox record committed in the EXACT same database transaction
await tx.insert(outboxEvents).values({
tenantId: order.tenantId,
eventType: 'order.created',
payload: order,
status: 'PENDING'
});
});
// Cryptographic HMAC-SHA256 Signing & Idempotency Key
const idempotencyKey = `ticiworks-${event.tenantId}-${event.id}`;
const signature = signWebhook({ secret, timestamp, body });Zero UPDATE or DELETE operations on commercial transactions. Double-entry bookkeeping with strict debit and credit balancing and exact decimal arithmetic.
| Timestamp | Entry Type | Description / Audit Ref | Debit (Borç) | Credit (Alacak) |
|---|---|---|---|---|
| 14:02:18 | INVOICE | Engine Oil Filters (Pallet 14A - Ref: INV-2026-081) | ₺48.500,00 | — |
Compare the architectural reality of renting software from a multi-tenant SaaS vendor against owning your complete technology asset.
| Architectural Dimension | LABONNI Sovereign Architecture | Generic Multi-Tenant SaaS (Shopify / BigCommerce) |
|---|---|---|
| Code & Repository Ownership | ✓ 100% Full IP Transfer (Git repo in your organization) | ✗ Zero backend access; vendor owns the platform runtime |
| Database & Data Sovereignty | ✓ Dedicated PostgreSQL schema with superuser SQL access | ✗ Locked black box; restricted to rate-limited REST/GraphQL APIs |
| Platform Tax / Transaction Cuts | ✓ 0.0% Commission (Zero revenue-share penalty forever) | ✗ 0.5% – 2.0% transaction tax on every sale |
| ERP & Accounting Sync | ✓ Native Transactional Outbox worker with HMAC signatures | ✗ Fragile 3rd-party webhook apps prone to desynchronization |
| High-SKU & Custom Fitment Engines | ✓ Sub-second trigram indexing over 150,000+ SKUs | ✗ Degrades heavily with variant caps and API payload limits |
| Infrastructure & Edge Performance | ✓ Cloudflare Workers edge delivery (<50ms TTFB worldwide) | ✗ Bloated client scripts degrading Core Web Vitals to <50 |
Speak directly with LABONNI's principal software architects. We analyze your ERP integration surface, database tenancy requirements, and deliver a comprehensive implementation roadmap.