Common Patterns

Production-ready patterns built on Browser Lifecycle.

Pattern	Use case
Auto Save	Persist drafts when the user pauses
Analytics	Emit presence-aware analytics events
Presence Detection	Track active vs idle users
Session Timeout	Warn before session expiry
Background Sync	Sync when connectivity returns
Offline First	Queue work while offline
Polling	Pause polling when hidden
Page Tracking	Track page visibility sessions
Visibility Pause	Pause expensive work when hidden
Focus Resume	Resume on window focus
Shared WebSocket	One socket in the primary tab
Leader Election	Elect a single coordinator tab
Plugin Architecture	Extend runtime behavior safely
State Synchronization	Share state across tabs

Each pattern links to playground pages and framework examples where applicable.