System Design Practice Template

System: Date:

Requirements

• Functional requirements:
• Non-functional requirements:
• Out of scope:

Scale Assumptions

• Users:
• Requests per second:
• Data size:
• Latency target:
• Availability target:

API Design

• Endpoint or interface:
• Request:
• Response:
• Errors:

Data Model

• Entities:
• Relationships:
• Indexes:
• Retention:

Architecture

Client -> API -> Services -> Data Stores -> Background Jobs -> Monitoring

Security

• Authentication:
• Authorization:
• Encryption:
• Secrets:
• Audit:

Failure Modes

• Failure:
• Impact:
• Mitigation:

Monitoring

• Logs:
• Metrics:
• Traces:
• Alerts:

Cost

• Main cost drivers:
• Optimization options:

Disaster Recovery

• Backup strategy:
• Restore strategy:
• RTO:
• RPO: