Architecture
Documentation of system architecture, design patterns, and technical decisions.
System Components
Calculation System
Financial calculation engine design and implementation.
Rate Limiter
API rate limiting implementation with Redis.
Unified Reports
Unified reporting infrastructure design.
Architecture Decision Records
See ADR Directory for all architecture decisions:
Design Principles
The Onwards codebase follows these key principles:
- Type Safety: TypeScript throughout with strict mode enabled
- Async by Default: Background processing for long-running operations
- Service Layer: Business logic separated from API controllers
- Database Migrations: All schema changes tracked in version control
- Testability: Services designed for easy mocking and testing