Remove redis

README.md

@@ -6,7 +6,6 @@ A modern, containerized Prior Permission Required (PPR) system for aircraft oper
 
 - **Backend**: FastAPI with Python 3.11
 - **Database**: MySQL 8.0
-- **Cache**: Redis 7
 - **Container**: Docker & Docker Compose
 
 ## Features
@@ -63,7 +62,7 @@ The container automatically handles:
 - Database connection verification
 - Schema creation/migration (Alembic)
 - Reference data seeding (if needed)
-- Production server startup (4 workers)
+- Production server startup (single worker for in-process WebSocket broadcasts)
 
 **Monitor deployment:**
 ```bash
@@ -289,7 +288,6 @@ This ensures consistency across different time zones and complies with aviation
 
 - Database connection pooling
 - Indexed columns for fast queries
-- Redis caching (ready for implementation)
 - Async/await for non-blocking operations
 
 ## Monitoring