Sessions

• Explain server-side user state across requests.
• Contrast with cookies and one-off form input.

How WebEngine uses sessions

• Explain session setup during the request lifecycle.
• Explain where session data is accessed from application code.

Common patterns

• Authentication state.
• Flash messages.
• Multi-step workflows.

Storage and configuration

• Mention handlers and configuration at a high level.
• Explain how to use other handlers such as Redis.

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Now object-oriented methods are available for accessing cookies, sessions and user input, we can learn about protected globals.