Architecture Review

Architecture Review

RFC Template

Use this template for Request for Comments on significant architecture changes:

# RFC: {Title}

## Context

{Why is this change needed? What problem does it solve?}

## Options Considered

### Option A: {Name}
- **Pros**: {list}
- **Cons**: {list}
- **Cost**: {estimate}
- **Timeline**: {estimate}

### Option B: {Name}
- **Pros**: {list}
- **Cons**: {list}
- **Cost**: {estimate}
- **Timeline**: {estimate}

## Decision

{Which option was chosen and why}

## Consequences

- **Positive**: {expected benefits}
- **Negative**: {trade-offs and risks}
- **Neutral**: {side effects}

ADR Template

Architecture Decision Records document key technical choices:

# ADR {Number}: {Title}

**Status**: {Proposed | Accepted | Rejected | Deprecated | Superseded}

**Date**: {YYYY-MM-DD}

## Context

{What is the issue we're addressing?}

## Decision

{What is the change we're proposing or have agreed to?}

## Consequences

{What becomes easier or more difficult? What are the trade-offs?}

## Alternatives Considered

- {Alternative 1}: {Why it was rejected}
- {Alternative 2}: {Why it was rejected}

System Design Review Checklist

When reviewing a system design, evaluate against these dimensions:

Scalability

• Can it handle 10x current load?
• What are the bottlenecks?
• Is horizontal scaling possible?
• Are there stateful components that limit scaling?

Reliability

• What is the expected uptime target?
• How are failures handled?
• What are single points of failure?
• Is there redundancy at critical layers?

Security

• How is authentication/authorization handled?
• Are secrets properly managed?
• Is data encrypted in transit and at rest?
• What are the attack surfaces?
• Is input validation comprehensive?

Observability

• What metrics are tracked?
• How are errors logged and alerted?
• Can we trace requests across services?
• Is there sufficient visibility for debugging?

Cost

• What is the infrastructure cost?
• Are there licensing fees?
• What is the operational overhead?
• How does cost scale with usage?

Tech Debt Scoring Framework

Rate tech debt items on a 1-5 scale:

Priority Score = (Impact + Risk + Urgency) / 3

Total Score = Priority Score × Effort

Use Total Score to prioritize tech debt backlog.