# System Overview (Audit-Only, Immediate Publish)

The Box System is a multi-API backend platform built for large-scale content delivery and advertisement placement.  

## Key Principles
- **Immediate publish**: No Maker–Checker, no approval steps.
- **Audit-only tracking**: Every change is logged but applied instantly.
- **RBAC enforcement**: SuperAdmin has full control; Managers/Admins handle content.
- **Redis-first architecture** for ad/video responses.
- **MongoDB for content**, **MySQL for admin**, **Redis for performance**.

## Components
1. **box-mgnt-api (Management)**  
   Admin tool for managing ads, videos, channels, categories, system parameters.

2. **box-app-api (Consumer)**  
   Public API serving ads, videos, homepage data.

3. **box-stats-api (Future)**  
   Event ingestion and stats aggregation.