BE-002 — Implement PostgreSQL Database Infrastructure
📚 Overview
The PostgreSQL Database Infrastructure provides the persistence layer for the TruthBounty backend. While the blockchain remains the authoritative source of protocol state, PostgreSQL serves as the primary datastore for indexed blockchain events, application metadata, analytics, notifications, audit logs, AI processing, and operational data.
Unlike TruthBounty V1, where business-critical protocol state was duplicated and managed within the backend, TruthBounty V2 treats PostgreSQL strictly as a derived data store. All blockchain-derived information must be reproducible through re-indexing, ensuring consistency between on-chain and off-chain data.
This issue focuses on implementing a scalable, secure, and maintainable PostgreSQL infrastructure that serves as the foundation for every backend service.
The Database Infrastructure will become the dependency for:
- Authentication Service
- User Service
- Blockchain Indexer
- Claim Query Service
- Verification API
- Reputation API
- Rewards API
- Notification Service
- Analytics Service
- AI Assistant
- Administration Portal
Every backend module assumes that the database layer is correctly configured, resilient, and production-ready.
🧠 Background
TruthBounty V1 tightly coupled backend logic with its database, making PostgreSQL a source of truth for protocol state.
This architecture created several problems:
- duplicated protocol state
- inconsistent blockchain synchronisation
- difficult recovery after failures
- migration complexity
- unnecessary trust assumptions
TruthBounty V2 removes these issues by clearly separating responsibilities.
The blockchain owns protocol state.
PostgreSQL owns:
- indexed blockchain events
- cached query models
- user preferences
- notification history
- analytics datasets
- audit trails
- AI processing records
- operational metadata
Every record stored in PostgreSQL must either be reproducible or represent backend-specific operational information.
🎯 Objectives
Implement a production-ready PostgreSQL infrastructure that:
- establishes secure database connectivity
- configures TypeORM
- supports schema migrations
- enables repository injection
- supports transaction management
- configures connection pooling
- validates entity mappings
- prepares the backend for horizontal scaling
The implementation should remain modular, extensible, and suitable for production deployments.
🧩 Technical Scope
1. PostgreSQL Configuration
Configure PostgreSQL using environment variables.
Support:
- local development
- staging
- production
2. Database Module
Implement a dedicated Database Module responsible for:
- connection management
- dependency injection
- lifecycle management
- health reporting
3. TypeORM Integration
Configure:
- entities
- repositories
- migrations
- subscribers
- naming strategy
4. Migration System
Implement migration support for:
- schema creation
- schema updates
- rollback operations
- migration history
No automatic schema synchronisation should be enabled in production.
5. Transaction Support
Provide reusable transaction helpers supporting:
- atomic operations
- rollback
- nested transactions where applicable
6. Connection Pooling
Configure:
- maximum connections
- idle timeout
- acquisition timeout
- retry strategy
to support high-concurrency production workloads.
7. Repository Pattern
Implement repository injection for all future backend domains.
Repositories should be isolated from business logic to encourage clean architecture.
8. Seed Framework
Implement database seeding for:
- development
- testing
- demo environments
Seed data must never be executed automatically in production.
9. Database Health Checks
Expose database health information through the monitoring module, including:
- connectivity
- latency
- migration status
- connection pool utilisation
10. Security
Ensure:
- SSL support
- encrypted credentials
- least-privilege database users
- prepared statements
- SQL injection protection
✅ Acceptance Criteria
- PostgreSQL connects successfully.
- TypeORM initialises correctly.
- Repository injection functions.
- Migrations execute successfully.
- Rollbacks complete without data corruption.
- Connection pooling is operational.
- Transactions behave correctly.
- Health checks report database status.
- Seed framework operates in development only.
- Unit and integration tests pass.
🧪 Testing Requirements
Implement tests covering:
- database connection
- migration execution
- rollback execution
- repository injection
- transaction rollback
- concurrent database access
- connection pool behaviour
- health endpoint validation
- seed execution
- entity validation
📚 Documentation
Update:
- Backend Architecture
- Database Documentation
- Environment Variables Guide
- Migration Guide
- Deployment Documentation
🔗 Dependencies
Depends on:
- BE-001 — Implement Backend Authentication Gateway
Blocks:
- Blockchain Indexer
- User Service
- Claim Query Service
- Reputation Service
- Rewards Service
- Notification Service
- Analytics Service
🏷 Labels
- backend
- database
- architecture
- complexity-medium
- stellar-wave
📊 Complexity
Medium
The database infrastructure forms the persistence foundation of every backend service. Incorrect configuration or migration strategy will impact the stability and scalability of the entire backend.
⏱ Estimated Effort
3–5 days
🚀 Definition of Done
- PostgreSQL configured.
- TypeORM operational.
- Migrations implemented.
- Repository pattern established.
- Transactions functional.
- Connection pooling configured.
- Health checks integrated.
- Tests passing.
- Documentation updated.
- Ready for downstream backend modules.
BE-002 — Implement PostgreSQL Database Infrastructure
📚 Overview
The PostgreSQL Database Infrastructure provides the persistence layer for the TruthBounty backend. While the blockchain remains the authoritative source of protocol state, PostgreSQL serves as the primary datastore for indexed blockchain events, application metadata, analytics, notifications, audit logs, AI processing, and operational data.
Unlike TruthBounty V1, where business-critical protocol state was duplicated and managed within the backend, TruthBounty V2 treats PostgreSQL strictly as a derived data store. All blockchain-derived information must be reproducible through re-indexing, ensuring consistency between on-chain and off-chain data.
This issue focuses on implementing a scalable, secure, and maintainable PostgreSQL infrastructure that serves as the foundation for every backend service.
The Database Infrastructure will become the dependency for:
Every backend module assumes that the database layer is correctly configured, resilient, and production-ready.
🧠 Background
TruthBounty V1 tightly coupled backend logic with its database, making PostgreSQL a source of truth for protocol state.
This architecture created several problems:
TruthBounty V2 removes these issues by clearly separating responsibilities.
The blockchain owns protocol state.
PostgreSQL owns:
Every record stored in PostgreSQL must either be reproducible or represent backend-specific operational information.
🎯 Objectives
Implement a production-ready PostgreSQL infrastructure that:
The implementation should remain modular, extensible, and suitable for production deployments.
🧩 Technical Scope
1. PostgreSQL Configuration
Configure PostgreSQL using environment variables.
Support:
2. Database Module
Implement a dedicated Database Module responsible for:
3. TypeORM Integration
Configure:
4. Migration System
Implement migration support for:
No automatic schema synchronisation should be enabled in production.
5. Transaction Support
Provide reusable transaction helpers supporting:
6. Connection Pooling
Configure:
to support high-concurrency production workloads.
7. Repository Pattern
Implement repository injection for all future backend domains.
Repositories should be isolated from business logic to encourage clean architecture.
8. Seed Framework
Implement database seeding for:
Seed data must never be executed automatically in production.
9. Database Health Checks
Expose database health information through the monitoring module, including:
10. Security
Ensure:
✅ Acceptance Criteria
🧪 Testing Requirements
Implement tests covering:
📚 Documentation
Update:
🔗 Dependencies
Depends on:
Blocks:
🏷 Labels
📊 Complexity
Medium
The database infrastructure forms the persistence foundation of every backend service. Incorrect configuration or migration strategy will impact the stability and scalability of the entire backend.
⏱ Estimated Effort
3–5 days
🚀 Definition of Done