# [Feature Name] Technical Specification

## Overview
Brief description of what this spec covers

## Problem Statement
What problem are we solving?

## Goals and Non-Goals
### Goals
- Goal 1
- Goal 2

### Non-Goals
- What we're explicitly not doing

## Solution Design
### High-Level Architecture
### Data Models
### API Contracts
### User Interface

## Implementation Plan
### Phase 1
### Phase 2

## Testing Strategy

## Security Considerations

## Performance Considerations

## Monitoring and Alerting

## Rollout Plan

## Rollback Plan

## Open Questions

## References

# System Architecture

## Overview
High-level system description

## Architecture Diagram
[Insert diagram]

## Components
### Component 1
- Responsibility
- Technology stack
- Interfaces

### Component 2
...

## Data Flow
How data moves through the system

## Key Design Decisions
### Decision 1
- Context
- Options considered
- Decision made
- Rationale

## Technology Stack
- Frontend: React, TypeScript
- Backend: Python, FastAPI
- Database: PostgreSQL
- Infrastructure: AWS, Docker, Kubernetes

## Scalability
How the system scales

## Security
Authentication, authorization, data protection

## Monitoring and Observability
Metrics, logs, tracing

## Disaster Recovery
Backup and recovery procedures

## Future Considerations

# [Service Name] Runbook

## Service Overview
What this service does

## Dependencies
- Service A
- Service B
- Database X

## Deployment
### How to deploy
```bash
./deploy.sh production

./rollback.sh

kubectl logs -f deployment/service-name

curl https://api/metrics

**API Documentation**:
```markdown
# API Documentation

## Authentication
All requests require authentication:
```bash
curl -H "Authorization: Bearer YOUR_TOKEN" \
  https://api.example.com/endpoint

GET /api/v1/users

curl -X GET "https://api.example.com/api/v1/users?page=1&limit=20" \
  -H "Authorization: Bearer YOUR_TOKEN"

{
  "data": [
    {
      "id": 1,
      "name": "John Doe",
      "email": "john@example.com"
    }
  ],
  "pagination": {
    "page": 1,
    "limit": 20,
    "total": 100
  }
}

### Step 3: Writing guidelines

**Clarity**:
- Use simple, direct language
- One idea per sentence
- Short paragraphs (3-5 sentences)
- Define technical terms
- Avoid jargon when possible

**Structure**:
- Use hierarchical headings (H1, H2, H3)
- Break content into sections
- Use lists for multiple items
- Use tables for structured data
- Add table of contents for long docs

**Examples**:
- Include code examples
- Provide diagrams
- Show before/after comparisons
- Real-world scenarios

**Completeness**:
- Cover prerequisites
- Include error handling
- Document edge cases
- Explain why, not just how
- Link to related docs

**Consistency**:
- Consistent terminology
- Consistent formatting
- Consistent code style
- Consistent structure

### Step 4: Visual aids

**Architecture diagrams** (Mermaid):
```mermaid
graph TB
    A[Client] -->|HTTP| B[Load Balancer]
    B --> C[Web Server 1]
    B --> D[Web Server 2]
    C --> E[Database]
    D --> E

sequenceDiagram
    Client->>+Server: Request
    Server->>+Database: Query
    Database-->>-Server: Data
    Server-->>-Client: Response

flowchart TD
    A[Start] --> B{Is valid?}
    B -->|Yes| C[Process]
    B -->|No| D[Error]
    C --> E[End]
    D --> E

def calculate_total(items: List[Item]) -> Decimal:
    """Calculate total price of items."""
    return sum(item.price for item in items)

# [Feature Name] Technical Spec

**Author**: [Your Name]
**Date**: [Date]
**Status**: [Draft/Review/Approved]

## Overview
[1-2 paragraphs describing what this document covers]

## Background
[Context and motivation]

## Goals
- Goal 1
- Goal 2

## Non-Goals
- What we're not doing

## Detailed Design
[Technical details]

## Alternatives Considered
[Other approaches and why we didn't choose them]

## Timeline
- Week 1: ...
- Week 2: ...

## Open Questions
- Question 1
- Question 2

## Features
- Feature 1
- Feature 2

## Installation

### Prerequisites
- Node.js >= 14
- npm >= 6

### Setup
```bash
git clone https://github.com/user/project.git
cd project
npm install

npm start

npm run dev
npm test

### Changelog Template
```markdown
# Changelog

## [1.2.0] - 2024-01-15

### Added
- New feature X
- Support for Y

### Changed
- Improved performance of Z
- Updated dependency A to v2.0

### Fixed
- Bug where user couldn't login
- Memory leak in background task

### Deprecated
- Old API endpoint /v1/users (use /v2/users)

### Removed
- Legacy authentication method

### Security
- Fixed XSS vulnerability in comments

## [1.1.0] - 2024-01-01
...

✅ Good: "The system sends a notification"
❌ Bad: "A notification is sent by the system"

✅ Good: "Click Save to save changes"
❌ Bad: "In order to save your changes, you should click on the Save button"

✅ Good:
"Set the timeout in seconds:
```yaml
timeout: 30

### Break down complexity

## Common mistakes to avoid

1. **Assuming knowledge**: Define terms, explain context
2. **Outdated docs**: Keep in sync with code
3. **Missing examples**: Always include examples
4. **No visuals**: Use diagrams for complex concepts
5. **Poor structure**: Use headings and sections
6. **Passive voice**: Use active voice
7. **Too much jargon**: Write for your audience
8. **No version info**: Date docs, note versions
9. **Missing error cases**: Document what can go wrong
10. **No maintenance**: Update regularly

## Best practices

1. **Write for your audience**: Match their knowledge level
2. **Start with why**: Explain the purpose
3. **Show, don't just tell**: Use examples
4. **Be consistent**: Terminology, style, structure
5. **Test your docs**: Can someone follow them?
6. **Version your docs**: Track with code versions
7. **Use templates**: Consistency across docs
8. **Link related docs**: Help readers find more info
9. **Update with code**: Docs are part of the code
10. **Review regularly**: Quarterly doc review

## Tools

**Diagram tools**:
- Mermaid (markdown-based)
- Draw.io
- Lucidchart
- PlantUML

**Documentation platforms**:
- GitBook
- Docusaurus
- MkDocs
- Sphinx

**Style checkers**:
- Grammarly
- Hemingway Editor
- Vale

**Screenshot tools**:
- Snagit
- CloudApp
- Loom (for videos)

## Examples

### Example 1: Basic usage
<!-- Add example content here -->

### Example 2: Advanced usage
<!-- Add advanced example content here -->