Architectural Decision Records

This directory contains a log of the architectural decisions made for the Flyer Crawler project.

1. Foundational / Core Infrastructure

ADR-002: Standardized Transaction Management and Unit of Work Pattern (Proposed) ADR-007: Configuration and Secrets Management (Proposed) ADR-020: Health Checks and Liveness/Readiness Probes (Proposed)

2. Data Management

ADR-009: Caching Strategy for Read-Heavy Operations (Proposed) ADR-013: Database Schema Migration Strategy (Proposed) ADR-019: Data Backup and Recovery Strategy (Proposed) ADR-023: Database Schema Migration Strategy (Proposed)

3. API & Integration

ADR-003: Standardized Input Validation using Middleware (Proposed) ADR-008: API Versioning Strategy (Proposed) ADR-018: API Documentation Strategy (Proposed) ADR-022: Real-time Notification System (Proposed)

4. Security & Compliance

ADR-001: Standardized Error Handling for Service and Repository Layers (Accepted) ADR-011: Advanced Authorization and Access Control Strategy (Proposed) ADR-016: API Security Hardening (Proposed)

5. Observability & Monitoring

ADR-004: Standardized Application-Wide Structured Logging (Proposed) ADR-015: Application Performance Monitoring (APM) and Error Tracking (Proposed)

6. Deployment & Operations

ADR-006: Background Job Processing and Task Queues (Proposed) ADR-014: Containerization and Deployment Strategy (Proposed) ADR-017: CI/CD and Branching Strategy (Proposed) ADR-024: Feature Flagging Strategy (Proposed)

7. Frontend / User Interface

ADR-005: Frontend State Management and Server Cache Strategy (Proposed) ADR-012: Frontend Component Library and Design System (Proposed) ADR-025: Internationalization (i18n) and Localization (l10n) Strategy (Proposed)

8. Development Workflow & Quality

ADR-010: Testing Strategy and Standards (Proposed) ADR-021: Code Formatting and Linting Unification (Proposed)

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