Stop Using WebSockets for Everything 🚨

When developers hear "real-time communication," the first thing that comes to mind is usually WebSockets.

But here's the thing:

WebSockets are not always the best solution.

Choosing the wrong real-time technology can add unnecessary complexity, infrastructure costs, and maintenance headaches.

Let's look at some alternatives and when you should use them.

SSE allows the server to push updates to the client over a regular HTTP connection.

Perfect for:

✅ Live dashboards

✅ Notifications

✅ AI response streaming (like ChatGPT)

✅ Monitoring systems

Example:

const eventSource = new EventSource("/events");

eventSource.onmessage = (event) => {
  console.log(event.data);
};

Why I like it:

Before WebSockets became popular, long polling was the go-to approach.

How it works:

Useful for:

✅ Legacy systems

✅ Simple notification services

Not ideal for high-frequency updates.

WebRTC enables direct peer-to-peer communication.

Best for:

✅ Video calls

✅ Voice calls

✅ Screen sharing

✅ P2P data transfer

This is what powers many modern meeting applications.

With HTTP/2 and modern browsers, streaming data continuously is easier than ever.

Useful for:

✅ AI-generated content streaming

✅ Real-time logs

✅ Analytics dashboards

Use WebSockets when you need:

✅ Bidirectional communication

✅ Chat applications

✅ Multiplayer games

✅ Collaborative editing tools

✅ Trading platforms

One of the biggest engineering mistakes is choosing a more complex solution when a simpler one would work perfectly.

Not every real-time application needs WebSockets.

Sometimes a simple SSE connection is all you need.

What real-time technology are you using in production today?