Architecture Decision Records (ADR)

Formal record of Reqivo architectural decisions

Start date: 2026-01-29 Last updated: 2026-02-12

What is an ADR?

An Architecture Decision Record (ADR) documents a significant architectural decision along with its context and consequences. This document serves as an index to individual decisions.

Each decision includes:

  • Context: What led us to take this decision

  • Decision: What we decided to do

  • Consequences: Positive and negative impacts

  • Status: Accepted, Proposed, Deprecated, Superseded

Decision Index

#

Title

Status

Date

ADR-001

Zero Dependencies Policy

✅ Accepted

2026-01-29

ADR-002

Async-First Architecture

✅ Accepted

2026-01-29

ADR-003

Session-Based State Management

✅ Accepted

2026-01-29

ADR-004

LIFO Connection Pooling

✅ Accepted

2026-01-29

ADR-005

HTTP/1.1 Before HTTP/2

✅ Accepted

2026-01-29

ADR-006

Granular Exception Hierarchy

✅ Accepted

2026-01-29

ADR-007

Memory Optimization with __slots__

✅ Accepted

2026-01-29

ADR-008

Strict Type Safety

✅ Accepted

2026-01-29

ADR-009

97% Test Coverage Minimum

✅ Accepted

2026-01-29

ADR-010

Limited Public API Surface

✅ Accepted

2026-01-29

ADR-011

Three-Layer Architecture

✅ Accepted

2026-01-29

ADR-012

Manual HTTP Parsing

✅ Accepted

2026-01-29

ADR-013

Python 3.9+ Minimum Version

✅ Accepted

2026-01-29

ADR-014

Test Structure Organization

✅ Accepted

2026-01-29

ADR-015

Code Quality Improvements

✅ Accepted

2026-01-30

ADR-016

Automatic HTTP Redirect Handling

✅ Accepted

2026-01-30

ADR-017

Keyword-Only Parameters

✅ Accepted

2026-01-30

ADR-018

CI/CD Pipeline Strategy

✅ Accepted

2026-01-30

📋 Template for New ADRs

Use this template to document new decisions:

# ADR-XXX: [Decision Title]

**Status**: 🔄 Proposed / ✅ Accepted / ❌ Rejected / ⚠️ Deprecated / 🔄 Superseded
**Date**: YYYY-MM-DD
**Deciders**: [Names]
**Supersedes**: [ADR-YYY] (if applicable)

## Context

[Describe the context and the problem this decision solves]

## Decision

[Describe the decision taken]

## Consequences

### Positive ✅

[List of positive consequences]

### Negative ❌

[List of negative consequences or trade-offs]

### Mitigations

[How to mitigate negative consequences]

## Alternatives Considered

[What other options were considered and why they were rejected]

## References

[Links to relevant RFCs, docs, issues, PRs]

📚 General References