14 — RFC Architecture

What is it: RFC (Request for Comments) architecture documents for financial systems.

Why it matters: Complex systems need well-documented decisions. RFCs capture the reasoning behind architecture choices.

Challenge Description

Create RFC (Request for Comments) architecture documents for hypothetical financial systems, demonstrating ability to design complex systems with well-documented decisions.

Requirements:

• Complete RFC structure (problem, solution, trade-offs)
• Architecture diagrams (ASCII and Mermaid)
• Data modeling (ERD)
• REST/GraphQL API design
• Security considerations
• Alternatives analysis

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RFC Documents

#	RFC	Description
1	Credit on top of Pix	Credit system layered on Pix instant payments
2	Data Lake for Fintech	Analytical data lake for financial data
3	Financial Monitoring	Real-time financial transaction monitoring

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RFC Structure

Each RFC follows this structure:

1. Title and Metadata
   - Title, Author, Date, Status, Version

2. Problem Statement
   - Context
   - Motivation
   - Goals and Non-Goals

3. Proposed Solution
   - Architecture Overview
   - Component Diagram
   - Data Flow

4. Database Schema (Mermaid ERD)
   - Entity-Relationship Diagram
   - Table descriptions

5. API Design
   - Endpoints
   - Request/Response examples
   - Authentication

6. Trade-offs and Alternatives
   - Options considered
   - Pros and cons

7. Security Considerations
   - Threats
   - Mitigations
   - Compliance

8. Open Questions
   - Items needing further discussion

How to View

# Open RFCs via VitePress
make docs

# Direct markdown
open packages/docs/rfc/credit-on-pix.md
open packages/docs/rfc/data-lake.md
open packages/docs/rfc/financial-monitoring.md