The full architecture breakdown, performance benchmarks, and detailed concurrency telemetry for this system are currently being compiled.
Nazam
A centralized commerce operations hub that connects online storefronts, inventory, payment collection, and regional shipping couriers across the Middle East.
Visual UI assets for this enterprise deployment are restricted under confidential client agreements. Architectural schematics and system specifications are outlined below.
Zero dropped webhooks with exponential backoff
Full bidirectional RTL/LTR support
Shared type-safe schemas across client & server
01: Operational Challenge & Concurrency Bottleneck
I owned the entire product full-stack as a solo engineer within a monorepo, designing the database schema, worker queues, external store connectors, and merchant dashboard.
Merchants selling across the Middle East lose hours daily copying order details into courier portals, reconciling cash-on-delivery payments, and manually updating stock levels across multiple storefronts.
Ingesting bulk product updates and order webhooks from multiple storefronts concurrently threatened to overwhelm database connections and trigger external courier API rate limits.
I built a worker queue pipeline with exponential backoff retries, concurrency limiters, and payload deduplication to process external events asynchronously without blocking HTTP request threads or tripping third-party rate limits.
Core Subsystem Modules & Domain Isolation
Background Worker Queues
Asynchronous job pipeline with concurrency limiters, payload deduplication, and exponential backoff retries.
Store & Courier Connectors
Rate-limited store synchronization pipelines preventing downstream API throttles.
Architectural Capabilities & Engineered Workflows
Multi-Store Inventory Sync
Synchronizes stock levels across domestic and regional storefronts.
Bulk Courier Dispatch
Generates shipping waybills in batch with regional logistics providers.
Cash-on-Delivery Auditing
Reconciles courier cash collections against bank deposits automatically.
Background Task Processing
Handles bulk product imports and batch notifications asynchronously.
Bilingual RTL/LTR Interface
Native Arabic and English layout switching tailored for regional teams.
System Topology & Architectural Data Flow
Next.js Web Client
Bilingual merchant dashboard with RTL switching
NestJS Gateway
REST API & auth boundary
BullMQ / Redis
Rate-limited job queue & backoff retry engine
Worker Processors
Asynchronous courier dispatch & sync workers
PostgreSQL
Multi-store catalog, inventory, and COD audits
Production Technology Matrix & Ecosystem
An all-in-one operations platform that connects online storefronts, multiple warehouses, regional shipping couriers, and payment collection for high-volume retail merchants.
A dedicated pilgrimage-by-proxy platform connecting seekers with verified performers in Mecca, featuring step-by-step ritual verification and secure escrow payments.
Next Steps & Technical Inquiries
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