codebase-walkthrough

Codebase Walkthrough

Phase 1: High-Level Architecture

• Describe the overall system architecture (monolith, microservices, monorepo, etc.)
• Map the major services and how they communicate (REST, gRPC, events, queues)
• Explain the data flow from user action to database and back
• Identify the infrastructure layer (cloud provider, containers, CDN, CI/CD)

Phase 2: Key Modules

• Tour the most important directories and their responsibilities
• Highlight the core domain logic and where business rules live
• Walk through the API layer: routing, middleware, controllers, validation
• Explain the data access layer: ORM, query patterns, migration strategy
• Point out shared utilities, design systems, and internal libraries

Phase 3: Patterns & Conventions

• Explain the primary design patterns in use (MVC, repository, CQRS, etc.)
• Review coding conventions: naming, file structure, error handling, logging
• Walk through the testing strategy and where tests live
• Highlight any known technical debt and areas earmarked for refactoring
• Share links to Architecture Decision Records (ADRs) for key past decisions