Internal Technical Guide Outline
Front Matter
Title: Clear name of the feature or project.
Metadata: Author, reviewers, creation date, and status (e.g., Draft, Approved).
References: Links to related CSS tickets, Product Requirement Documents (PRDs), or external design files.
Introduction & Goals
Problem Summary: A high-level description of what this feature solves from a technical or business perspective.
Goals & Non-Goals: What the implementation will do and, crucially, what it will not do to prevent "scope creep".
Glossary: Definitions for any new internal lingo, acronyms, or specific system names.
High-Level Architecture
System Diagram: A visual overview (e.g., using Mermaid.js or Lucidchart) showing how this feature interacts with existing services.
Technologies Used: Lists of languages, frameworks, or new third-party libraries introduced.
Detailed Design & Implementation
Data Model / Schema: New database tables, modified fields, and entity-relationship diagrams (ERDs).
API Specification: Endpoints, request/response formats, and authentication requirements (often linked to Swagger/OpenAPI docs).
Logic & Workflows: Step-by-step technical breakdown of complex algorithms or background processes.
Infrastructure & Operations
Dependencies: Internal or external services this feature relies on.
Monitoring & Alerting: Details on where logs are sent and what specific metrics (e.g., error rates) trigger alerts.
Deployment Plan: Steps for a safe rollout, including any feature flags or database migrations.
Testing & Quality Assurance
Test Strategy: Summary of unit, integration, and end-to-end tests created for this feature.
Known Limitations: Any "technical debt" or edge cases that aren't handled yet.
Maintenance & Support
Troubleshooting: A "cheat sheet" for on-call engineers to diagnose and fix common failures.
Changelog: A running history of significant technical changes made after the initial launch.
Document version:
1.0 - [Status], [Description][Date]
eg.
1.0 - Draft, Feature pushed to dev server after initial dev review, 03/03/2026
