WebSocket vs Server-Sent Events: Choosing the Right Real-Time Pattern for Your App

📰 Dev.to · Marcc Atayde

Learn when to use WebSockets vs Server-Sent Events for real-time updates in your app and why it matters for a better user experience

intermediate Published 7 Apr 2026
Action Steps
  1. Determine the type of real-time updates your app needs: one-way or bi-directional communication
  2. Evaluate the latency and throughput requirements for your app's updates
  3. Choose WebSockets for bi-directional, low-latency communication or Server-Sent Events for one-way, high-throughput updates
  4. Implement WebSockets using the WebSocket API or a library like Socket.io
  5. Implement Server-Sent Events using the EventSource API or a library like SSE.js
Who Needs to Know This

Web developers and backend engineers can benefit from understanding the differences between WebSockets and Server-Sent Events to choose the best approach for their application's real-time updates.

Key Insight

💡 WebSockets are suitable for bi-directional, low-latency communication, while Server-Sent Events are better for one-way, high-throughput updates

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💡 WebSockets vs Server-Sent Events: which one to use for real-time updates in your app? #webdevelopment #realtimeweb

Key Takeaways

Learn when to use WebSockets vs Server-Sent Events for real-time updates in your app and why it matters for a better user experience

Full Article

There's a moment in every web developer's career when a client says, "Can we make this update in real...
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