Enterprise Architecture Blueprints
Detailed case studies and technical blueprints for high-availability SaaS platforms, Kubernetes cluster topologies, dynamic tenant database routing, and real-time telemetry streaming engines.
High-Availability SaaS ERP on Kubernetes & OpenStack
System Overview & Objective
Architected for Softwater Centralized ERP. Deployed on dedicated OpenStack compute instances running high-availability Kubernetes (K8s) clusters with Nginx reverse proxy ingress controllers, Spring Boot polyglot microservices, and PostgreSQL primary-replica topologies.
Technical Bottlenecks & Design Challenges
- •Unpredictable concurrent billing loads causing CPU throttling on monolithic servers
- •Zero-downtime requirement during statutory month-end billing ledger closures
- •Strict tenant data privacy across regional water utility boards
Engineered Solutions & Mechanisms
- Horizontal Pod Autoscalers (HPA) responding to CPU/memory saturation metrics within 15 seconds
- Read/write split connection pooling directing heavy reporting queries to read replicas
- Automated rolling deployments via GitHub Actions and Helm charts with zero dropped packets
Production Stack & Infrastructure
Multi-Tenant Dynamic Schema Isolation Routing
System Overview & Objective
Engineered for Softcare Technologies. Employs a single Spring Boot application runtime that dynamically routes incoming HTTP requests to isolated PostgreSQL schemas based on cryptographic JWT tenant claims, guaranteeing 100% data boundary security.
Technical Bottlenecks & Design Challenges
- •Single database bottleneck with cross-tenant data corruption risk
- •Managing database schema migrations across hundreds of independent tenant schemas simultaneously
- •High database connection overhead under peak point-of-sale store operations
Engineered Solutions & Mechanisms
- ThreadLocal tenant context resolver mapping connections at runtime with zero overhead
- Automated Flyway migration orchestrator running DDL updates sequentially across all isolated tenant schemas
- Distributed Redis caching for branch inventory lookups, slashing query latency by 40%
Production Stack & Infrastructure
Computer Vision Transformer (TrOCR) Prescription Pipeline
System Overview & Objective
Created during BSc (Hons) Computer Science Final Research at University of Bolton. Bridges fine-tuned Transformer-based Optical Character Recognition (TrOCR) with cryptographic Ethereum smart contracts for counterfeit medicine prevention.
Technical Bottlenecks & Design Challenges
- •High variation in physician cursive handwriting causing severe transcription errors in standard OCR
- •Prescription tampering and multiple dispensary redemption fraud
- •Stringent patient medical privacy and HIPAA-aligned data integrity requirements
Engineered Solutions & Mechanisms
- Fine-tuned TrOCR vision transformer model achieving 96.4% handwritten character recognition accuracy
- Cryptographic hash of approved medical prescription recorded immutably on blockchain ledger
- Dispensary verification portal validating prescription state to prevent double-dispensing
Production Stack & Infrastructure
High-Frequency IoT Telemetry Ingestion Architecture
System Overview & Objective
Engineered for Ritz Garment logistics tracking hardware. Consumes high-frequency GPS, accelerometer, and fuel sensor telemetry from embedded ESP32 and NodeMCU microcontrollers.
Technical Bottlenecks & Design Challenges
- •Intermittent cellular network coverage causing bursts of buffered telemetry packets
- •High-throughput concurrent writes degrading standard relational database performance
- •Real-time geofence violation alerting required within sub-second thresholds
Engineered Solutions & Mechanisms
- Asynchronous MQTT broker queue decoupling hardware devices from backend processing services
- PostgreSQL time-series table partitioning based on timestamp ranges for rapid indexing
- Real-time WebSocket streaming broadcasting fleet coordinates to administrative dispatch maps
Production Stack & Infrastructure
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