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System Design
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      • Reference
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        • System Design
          • Topic Pages
          • Multi-page Topics
        • System Design: BBA Microgrid Controller Generic Packet Translation
        • System Design: Depot Simulation
        • System Design: IoT Sensor Packet
        • System Design: Microgrid Energy Orchestration
          • System Design: OCPP Profile 3 And ISO 15118 PKI
          • Architecture: BetterFleet OCPP Profile 3 and ISO 15118 PKI
          • Specification: BetterFleet OCPP Profile 3 and ISO 15118 Certificate Lifecycle Management
          • System Design: On-Prem Control
          • Challenge
          • Specification: BetterFleet On-Prem Continuity Control
          • System Design: OSCP
          • OSCP Protocol Documentation
          • Depot Sim Testing Requirements
          • System Design: OSCP Flexibility Provider Domain
      • Decisions
        • Architecture Decision Records
        • 0001 - Record architecture decisions
        • 0002 - Cognito for Authentication and Authorisation
        • 0003 - AWS Amplify for Authentication
        • 0004 - DynamoDB for default database
        • 0005 - Data Persistence
        • 0006 - Trunk-Based Development
        • 0007 - Generalised principle for automation
        • 0008 - Naming Repositories, Services, and URLs
        • 0009 - Use Timezone Aware DateTimes and UTC
        • 0010 - Use semantic release
        • 0011 - Centralized feature flag repository
        • 0012 - Use Named Exports in Storybook
        • 0013 - RESTful TITLE GraphQL
        • 0014 - Service Granularity
        • 0015 - Async/co-routine exception handling pattern
        • 0016 - Logging & log levels
        • 0017 - Instantiated Models
        • 0018 - Repository Pattern for Database Access
        • 0019 - Use of Design Tokens in TypeScript React Application
        • 0020 - API backwards compatibility and versioning
        • 0021 - Alembic Migration strategy
        • 0022 - Consistent react-hook-form usage
        • 0023 - Domain Event-Driven Architecture
        • 0024 - Domain Event Bus Tech Stack
        • 0025 - No enum types in DB table columns
        • 0026 - In-Memory Ormar Stores for Repository testing
        • 0027 - Storing Tab State in Query and Local Storage
        • 0028 - Adopt OpenTelemetry Semantic Conventions for Structured Logging
        • 0029 - Adopt RFC 9457 for HTTP Error Responses
        • 0030 - Use GitLab registry and Terraform state for ECS services
        • 0031 - Adopt DDD, Hexagonal Architecture, and CQRS for Python Domain Services
      • Work
        • Active Work
          • Work: Bba Microgrid Controller
          • Implementation Specification: BBA Microgrid Controller
          • BBA Microgrid Controller Deliverables (Stories)
          • Work: BFDev Monolithic Git
          • Challenge
          • Specification: BFDev Monolithic Git v2
          • BFDev Monolithic Git v2 Stories
          • Work: Complex Circuit Load Balancing
          • Implementation Specification: Complex Circuit Load Balancing
          • Complex Circuit Load Balancing Deliverables (Stories)
            • COR-10 and COR-11 Consolidation Review
          • Work: Dispatch Reliability and Reconciliation
          • Challenge
          • Specification: Dispatch Reliability and Reconciliation
          • Dispatch Reliability and Reconciliation (Unit User Stories)
            • Dispatch populated vehicle cards grey surface snapshot
            • Dispatch Visual Review
          • Work: Enable Scheduled Managed Charger Access
          • Challenge: Enable Scheduled Managed Charger Access
          • Specification Exploration Dossier: Enable Scheduled Managed Charger Access
          • Specification Review: Enable Scheduled Managed Charger Access
          • Specification: Enable Scheduled Managed Charger Access
          • Work: Guided Cut-Off and Release Orchestration
          • Specification: Guided Cut-Off and Release Orchestration
          • Guided Cut-Off and Release Orchestration (Unit User Stories)
          • Work: Production Deployment Validation
          • Challenge
          • Work: Scheduled Report Parity
          • Specification: Scheduled Report Parity
          • Work: Telematics
          • Telematics EventBridge Path
          • Telematics Ingress Architecture
          • Specification: Telematics Migration into bf-manage-core with 5-Minute Freshness and Health Visibility
          • Telematics Core Migration MVP (Implementation-Time BDD)
          • Work: Vector Derms
          • Implementation Specification: Vector DERMS
          • Vector DERMS Deliverables (Stories)
          • Work: Visiting Vehicle Charging Visibility
          • Specification: Visiting Vehicle Charging Visibility
          • Visiting Vehicle Charging Visibility (Unit User Stories)
          • Work: Workspace Owned Stripe Roaming
          • Specification: Workspace-Owned Stripe Credentials for Roaming Payments
        • Backlog Work
          • Work: Microgrid
          • Microgrid Backlog Stories
          • Work: Mobile Ops Companion
          • Challenge
          • Specification: Mobile Operations Companion v1
          • Mobile Operations Companion Deliverables (Stories)
          • Work: Oscp
          • OSCP Backlog Stories
        • Archived Work
          • Work: Code Canonical Orchestration
          • Challenge
          • Specification: Product Engineering Workflow
          • Product Engineering Workflow Deliverables (Unit User Stories)
          • Work: Release Notes Automation
          • Release Plan: Release Notes Automation
          • Release Notes Automation Backlog Stories
      • Operations
      • Onboarding Runbook
        • Operations Runbooks
        • Production Hotfix Release
        • Staging Hotfix Release
        • Manage Staging Release Validation
        • Terraform Plan Dry Runs
        • Operations Tooling
        • Code Indexing
        • Operations Evidence
        • Database Restoration Test Report
      • Daily Operations Runbook
      • Testing Guide
      • Troubleshooting
    • Topic Pages
    • Multi-page Topics
    1. Home
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    3. System design
    Platform Reliability & Safety Resilience & Security Shared Technical

    System Design¶

    This section holds long-lived system specifications and design baselines.

    Use these pages when the current work depends on enduring domain language, target contracts, conceptual architecture, or medium-term patterns that should outlast a single delivery slice.

    Topic Pages¶

    • Microgrid
    • IoT Sensor Packet
    • Depot Simulation
    • BBA Microgrid Controller Generic Packet Translation

    Multi-page Topics¶

    • OSCP
    • On-Prem Control
    • OCPP Profile 3 and ISO 15118 PKI
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