Introduction#

• The challenge of keeping UIs in sync with database changes
• Traditional polling vs WebSockets
• How Turbo solves this elegantly

Understanding Turbo Broadcasts#

• The broadcast_refresh_to / broadcast_replace_to pattern
• Channel subscription management
• The ActionCable connection under the hood

Setting Up Model Broadcasting#

• Configuring models for auto-broadcasting
• Using callbacks effectively
• Scoping broadcasts appropriately

Building Reusable Partials for Model Rendering#

• Designing partials with broadcasts in mind
• The importance of DOM IDs
• Handling different update scenarios (create, update, destroy)

Real-Time Collaboration Example#

• A shared task list that updates across users
• Implementing optimistic UI updates
• Handling conflicts and race conditions

Performance Considerations#

• Controlling broadcast frequency
• Limiting payload size
• Scaling concerns with many concurrent users

Advanced Patterns#

• Throttling and debouncing updates
• Batch processing changes
• Handling offline reconciliation

Testing Broadcast-Based Features#

• Unit tests for broadcast functionality
• Integration tests with multiple simulated users
• Performance testing under load

Conclusion#

• Best practices summary
• Security considerations
• Next steps and further reading

Code Repository#

• Link to the example task list application
• Setup and testing instructions