debate/.planning/phases/01-core-infrastructure-security/01-02-SUMMARY.md

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	duration	completed
01-core-infrastructure-security	02	database	postgresql sqlalchemy alembic asyncpg docker	phase provides 01-01 FastAPI project structure, pydantic-settings configuration	PostgreSQL database with Docker container Async SQLAlchemy session factory with connection pooling Alembic migration infrastructure for async Build model for tracking ISO generation jobs	01-03 01-04 01-05 02 03	added patterns postgresql:16-alpine asyncpg alembic async-session-management connection-pooling uuid-primary-keys	created modified backend/app/db/session.py backend/app/db/base.py backend/app/db/models/build.py backend/alembic/env.py docker-compose.yml .env.example	Use port 5433 for PostgreSQL to avoid conflict with existing postgres containers Connection pool: pool_size=10, max_overflow=20, pool_recycle=1800 (from research) Build model uses UUID primary key and SHA-256 config_hash for caching	Async session factory pattern with get_db() dependency Alembic async migrations using asyncio.run() Models inherit from DeclarativeBase and are imported in env.py	6min	2026-01-25

Phase 1 Plan 2: PostgreSQL Database Setup Summary

PostgreSQL 16 with async SQLAlchemy session factory, Alembic migrations, and Build tracking model

Performance

• Duration: 6 min
• Started: 2026-01-25T20:06:20Z
• Completed: 2026-01-25T20:12:01Z
• Tasks: 2
• Files modified: 13

Accomplishments

• PostgreSQL 16 running in Docker container with health checks (port 5433)
• Async SQLAlchemy engine with production-grade connection pooling
• Alembic configured for async migrations with autogenerate support
• Build model created with UUID primary key, status enum, and indexes

Task Commits

Each task was committed atomically:

1. Task 1: Set up PostgreSQL with Docker and async session factory - fbcd2bb (feat)
2. Task 2: Configure Alembic and create Build model - c261664 (feat)

Files Created/Modified

• docker-compose.yml - PostgreSQL 16 container configuration (port 5433)
• backend/app/db/session.py - Async engine and session factory with pooling
• backend/app/db/base.py - SQLAlchemy 2.0 DeclarativeBase
• backend/app/db/__init__.py - Database package exports
• backend/app/db/models/build.py - Build tracking model with status enum
• backend/app/db/models/__init__.py - Models package exports
• backend/alembic.ini - Alembic configuration
• backend/alembic/env.py - Async migration environment
• backend/alembic/versions/de1460a760b0_create_build_table.py - Initial migration
• .env.example - Updated DATABASE_URL to port 5433

Decisions Made

1. Port 5433 instead of 5432 - Another PostgreSQL container was using port 5432; used 5433 to avoid conflict
2. Connection pooling settings - Applied research recommendations: pool_size=10, max_overflow=20, pool_recycle=1800, pool_pre_ping=True
3. Build model design - UUID primary key for security, config_hash for deterministic caching, status enum for queue management

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

• Port 5432 was already allocated by another postgres container (moai-postgres)
• Resolution: Changed to port 5433 in docker-compose.yml and updated all configurations

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Database infrastructure complete and running
• Ready for 01-03-PLAN.md (Security middleware)
• Build model available for queue and worker implementation in Phase 3

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Phase: 01-core-infrastructure-security Completed: 2026-01-25