Blazor  

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.

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