session-management
Implement secure session management systems with JWT tokens, session storage, token refresh, logout handling, and CSRF protection. Use when managing user authentication state, handling token lifecycle, and securing sessions.
What this skill does
# Session Management
## Table of Contents
- [Overview](#overview)
- [When to Use](#when-to-use)
- [Quick Start](#quick-start)
- [Reference Guides](#reference-guides)
- [Best Practices](#best-practices)
## Overview
Implement comprehensive session management systems with secure token handling, session persistence, token refresh mechanisms, proper logout procedures, and CSRF protection across different backend frameworks.
## When to Use
- Implementing user authentication systems
- Managing session state and user context
- Handling JWT token refresh cycles
- Implementing logout functionality
- Protecting against CSRF attacks
- Managing session expiration and cleanup
## Quick Start
Minimal working example:
```python
# Python/Flask Example
from flask import current_app
from datetime import datetime, timedelta
import jwt
import os
class TokenManager:
def __init__(self, secret_key=None):
self.secret_key = secret_key or os.getenv('JWT_SECRET')
self.algorithm = 'HS256'
self.access_token_expires_hours = 1
self.refresh_token_expires_days = 7
def generate_tokens(self, user_id, email, role='user'):
"""Generate both access and refresh tokens"""
now = datetime.utcnow()
# Access token
access_payload = {
'user_id': user_id,
'email': email,
'role': role,
'type': 'access',
'iat': now,
'exp': now + timedelta(hours=self.access_token_expires_hours)
// ... (see reference guides for full implementation)
```
## Reference Guides
Detailed implementations in the `references/` directory:
| Guide | Contents |
|---|---|
| [JWT Token Generation and Validation](references/jwt-token-generation-and-validation.md) | JWT Token Generation and Validation |
| [Node.js/Express JWT Implementation](references/nodejsexpress-jwt-implementation.md) | Node.js/Express JWT Implementation |
| [Session Storage with Redis](references/session-storage-with-redis.md) | Session Storage with Redis |
| [CSRF Protection](references/csrf-protection.md) | CSRF Protection |
| [Session Middleware Chain](references/session-middleware-chain.md) | Session Middleware Chain |
| [Token Refresh Endpoint](references/token-refresh-endpoint.md) | Token Refresh Endpoint |
| [Session Cleanup and Maintenance](references/session-cleanup-and-maintenance.md) | Session Cleanup and Maintenance |
## Best Practices
### ✅ DO
- Use HTTPS for all session transmission
- Implement secure cookies (httpOnly, sameSite, secure flags)
- Use JWT with proper expiration times
- Implement token refresh mechanism
- Store refresh tokens securely
- Validate tokens on every request
- Use strong secret keys
- Implement session timeout
- Log authentication events
- Clear session data on logout
- Use CSRF tokens for state-changing requests
### ❌ DON'T
- Store sensitive data in tokens
- Use short secret keys
- Transmit tokens in URLs
- Ignore token expiration
- Reuse token secrets across environments
- Store tokens in localStorage (use httpOnly cookies)
- Implement session without HTTPS
- Forget to validate token signatures
- Expose session IDs in logs
- Use predictable session IDs
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