architecture

An Architecture Decision Record (ADR) documents architectural decisions and their rationale. It helps system design by capturing context, evaluating trade-offs, and ensuring design choices are driven by project requirements and constraints rather than arbitrary preferences.

To evaluate trade-offs for a microservice, analyze project scale, team structure, and constraints. Compare architectural options like REST versus message queues using decision trees and templates to weigh communication patterns against your specific performance and reliability requirements.

You write an ADR by using a structured template to capture the architectural decision, context, and consequences. The process involves analyzing requirements, evaluating trade-offs, and documenting the final design rationale to provide clear reasoning for future reference.

You should use a formal architectural decision-making framework when designing new systems like microservices or SaaS products. It is essential whenever you need to evaluate complex trade-offs, such as choosing data storage or communication patterns, and require documented justifications.

Yes, the framework supports requirement analysis for SaaS data storage design by guiding you through understanding project context, scale, and team constraints. It helps analyze trade-offs between different architectural options to ensure the storage design fits your specific needs.

ADRs document decisions but do not automatically enforce them in code. A limitation is that they require manual maintenance to stay relevant, and while they capture design rationale, they cannot replace continuous architectural evaluation when project constraints or scale change.