Pragma Architecture

Confiance : high

pragma-architecturepragmatic-designv1-implementationfield-testedbusiness-alignmenttechnical-decisionsproduction-focuscursor-assessmentreal-world-constraintspractical-solutions

Architectural approach emphasizing practical implementation decisions over theoretical perfection. Prioritizes business value delivery and real-world constraints while maintaining technical soundness. Term highlighted in cursor-ide assessment of deja-bu-pwa as "pragmatique V1".

Core Principles

Business-First Decision Making

Use case alignment drives technology choices
Operational constraints inform implementation patterns
User needs prioritized over technical elegance
Delivery timeline balanced with quality requirements

Practical Technology Selection

Proven stack combinations over bleeding-edge experimentation
Deployment simplicity with managed services preference
Development velocity optimized for team capabilities
Maintenance overhead minimized through appropriate abstractions

Real-World Application

The deja-bu-pwa project exemplified pragma architecture principles:

Appropriate Technology Choices

iPhone PWA → Vite/Svelte 5 → Vercel Python → Neon Postgres

Rationale per layer:

PWA: Native app experience without app store complexity
Svelte 5: Modern reactivity with small bundle size for mobile
Vercel Python: Serverless deployment matching development workflow
Neon Postgres: Managed database with branching for development

Pragmatic Implementation Patterns

Hash router: Custom implementation compatible with Svelte 5 runes
One file per resource: Vercel function boundaries matching business logic
Idempotent schema: ALTER TABLE IF NOT EXISTS without migration complexity
iOS optimizations: Field-discovered fixes for production deployment

Field-Tested Solutions

Problem-Driven Development

Reception module: Sophisticated quota tracking for real supplier workflows
Supplier aliases: Flexible matching addressing vendor name variations
Stock locations: Boutique vs reserve reflecting physical store layout
Photo analysis: LLM vision integration for actual delivery verification

Operational Reality

16px fonts: iOS auto-zoom prevention from user testing
Safe areas: iPhone notch handling through production feedback
Web Audio: Scanning feedback addressing accessibility requirements
Offline capability: PWA patterns for unreliable network conditions

Architecture Assessment

Quality Indicators

cursor-ide evaluation criteria for pragma architecture:

"Bien pensée pour le terrain": Field-appropriate design decisions
Coherent implementation: Consistent patterns across all layers
Business logic sophistication: Complex domain modeling where needed
Technical debt recognition: Understanding of V1 vs production trade-offs

Improvement Areas

Pragma architecture explicitly acknowledges areas for future enhancement:

Session robustness: Connection handling improvements
Documentation debt: Operational guides and deployment procedures
Production monitoring: Error tracking and performance metrics
Sync reliability: Data consistency in distributed operations

Development Benefits

Velocity Optimization

Faster iteration through simplified deployment workflows
Reduced complexity in areas not core to business value
Proven patterns minimizing architectural experimentation risk
Focused effort on unique business logic implementation

Risk Management

Technology maturity selection for production stability
Operational simplicity reducing deployment and maintenance overhead
Incremental enhancement path from V1 to production scale
Business alignment ensuring technical effort delivers value