1-SAPs WMS System Architecture
A resilient, distributed, low-latency microservices architecture engineered to power mission-critical manufacturing floor logistics with zero production downtime.
Distributed Architecture Flow
End-to-end data pipelines from mobile edge devices to AI microservices and ACID persistence.
Flutter Mobile App
iOS, Android, Industrial Scanners
Express.js Engine
Node.js High-Throughput Gateway
Python Flask API
Computer Vision & Similarity Search
PostgreSQL Database
Material Catalog, Transactions, Audit Trails, User Roles
Redis In-Memory Engine
Distributed Stock Locks, Real-time Queue, Event Pub/Sub
Core Technology Stack Deep-Dive
Each component is carefully chosen to fulfill strict industrial manufacturing SLAs.
Flutter (Dart)
High-performance native cross-platform application deployed on iOS and Android ruggedized industrial scanners and mobile devices.
Key Functions
- Native camera integration for instant AI parts image capture
- High-speed hardware barcode/QR code laser scanner bridging
- Offline-first local caching for factory floor blind spots
- Instant push notifications for Otodoke line-side dispatches
Next.js (React / TypeScript)
Enterprise-grade server-rendered web portal for plant managers, inventory controllers, and executive dashboards.
Key Functions
- Real-time material flow telemetry and interactive factory maps
- Multi-tier Role-Based Access Control (RBAC) administration
- Bulk inventory CSV/SAP ERP sync and audit trail analytics
- SSR/SSG optimization for zero-lag presentation and executive reporting
Express.js (Node.js)
High-throughput microservices gateway orchestrating business logic, order fulfillment lifecycles, and access control.
Key Functions
- Pickup vs. Otodoke (お届) order state machine workflow engine
- Real-time dispatch routing and warehouse counter queue management
- JWT/OAuth2 token issuance, rate limiting, and request sanitization
- Event orchestration between PostgreSQL, Redis Pub/Sub, and Flask AI
Python (Flask API + OpenCV/PyTorch)
Dedicated machine learning microservice specialized in visual spare parts identification, edge detection, and similarity matching.
Key Functions
- Convolutional Neural Network (CNN) feature vector extraction
- High-dimensional vector search against 50,000+ factory spare parts
- Image preprocessing (noise reduction, glare removal, auto-cropping)
- Confidence score rating with fallback part-number recommendations
PostgreSQL
Mission-critical ACID-compliant relational database storing inventory catalogs, purchase orders, audit trails, and user permissions.
Key Functions
- Strict relational schemas for multi-warehouse and bin locations
- Immutable audit log tables for all material transactions
- Optimized B-tree & GIN indices for sub-10ms query execution
- Automated write-ahead logging (WAL) & point-in-time recovery
Redis
Ultra-low latency in-memory data store for distributed concurrency locks, session states, and real-time event broadcasting.
Key Functions
- Distributed redlock material reservation (zero double-order race conditions)
- Pub/Sub message broker for live Otodoke dispatch alerts
- Fast-access caching for frequently requested stock levels
- Rate-limiting counters and ephemeral session tracking
How a Part Request Moves Through 1-SAPs
Material Request / AI Snap
Operator on Flutter AppPlant operator snaps a photo of a worn-out component or scans a machine QR code. Request is sent via HTTPS/TLS 1.3.
Vision Search & Classification
Python Flask AI ServiceFlask API extracts visual feature vectors, compares embeddings against the catalog vector DB, and returns matching SKU with 98.4% confidence.
Atomic Stock Reservation
Express.js + Redis LockExpress server acquires a Redis distributed lock on the SKU stock count to prevent concurrent double-booking during peak production shifts.
Fulfillment Routing Engine
Pickup vs. Otodoke EngineIf 'Pickup': Generates instant digital QR on Flutter. If 'Otodoke': Calculates shortest transit route to production line station and dispatches handler.
Transactional Commit & Audit
PostgreSQL DB & Next.js TelemetryDatabase updates stock balance, writes immutable audit record, and pushes live inventory delta to Next.js executive dashboard via WebSockets.
Enterprise RBAC
Granular permission gates for Line Operators, Warehouse Pickers, Logistics Drivers, and Plant Admins.
Zero Race-Conditions
Redis distributed Redlock guarantees concurrent orders never over-allocate safety stock.
Encrypted & Audited
End-to-end TLS 1.3 transit encryption, AES-256 at rest, with append-only PostgreSQL transaction logs.
Ready to integrate 1-SAPs into your factory infrastructure?
Our engineering team provides dedicated on-premises Docker/Kubernetes deployment guides and SAP ERP connectors.