Optimizing Performance in Blazor Server Applications

Introduction

• Briefly explain what Blazor Server is and why performance optimization is important.
• Common performance challenges in Blazor Server applications.

1. Reducing Network Traffic

• Minimizing Component Re-renders: Use @key, ShouldRender(), and StateHasChanged() wisely.
• Efficient Data Binding: Avoid unnecessary bindings and use @bind only when needed.
• Using Partial Rendering: Implement RenderFragment for selective UI updates.

2. Managing SignalR Efficiently

• Reduce unnecessary UI updates to lower SignalR message frequency.
• Implement circuit management to handle disconnected users properly.
• Optimize data transmission by sending only required updates.

3. Efficient State Management

• Use Persistent State Storage (e.g., ProtectedBrowserStorage or LocalStorage).
• Implement Scoped Services instead of relying on Singleton or Transient services for UI-related data.

4. Optimizing Database Queries

• Use Stored Procedures (since you already use them in banking software).
• Implement Lazy Loading and Paging for large datasets.
• Reduce round trips by using batch queries.

5. Memory Management and Garbage Collection

• Dispose of unused components properly (IDisposable).
• Avoid large objects in memory—use streaming for file downloads.

6. UI & Rendering Optimizations

• Virtualize lists with <Virtualize> for large datasets.
• Optimize CSS & JS loading by using lazy loading and minification.
• Reduce unnecessary DOM updates by using @key.

7. Background Processing

• Use background services (e.g., IHostedService) for long-running tasks instead of blocking the UI thread.
• Implement Queues for async operations.

8. Pre-rendering & Lazy Loading

• Use Pre-rendering for SEO and first-load performance.
• Lazy-load heavy components to improve page load speed.

9. Profiling and Debugging Performance Issues

• Use Performance Profilers (e.g., Application Insights, MiniProfiler).
• Debug SignalR traffic using Browser DevTools.

Conclusion

• Summarize key points.
• Encourage best practices for maintaining high-performance Blazor Server applications.