Concurrent Connections

What Are Concurrent Connections?

Concurrent connections are active client connections that a system is handling at the same time. In a live product, this can mean users, browsers, mobile apps, or devices connected to the backend at the same time. 

You often see this term around WebSocket-based products. The point is that the connection does not disappear after one request. It can stay open for the next message, presence change, reaction, or live update, so the server does not have to wait for a fresh page load.

Concurrent connections are not the same as total users. A product may have a large user base, but only part of that audience is connected at once. For real-time features, that active number is what creates the load.

Concurrent Connections vs. Total Users

Total users describe the broader audience. It says how many people have accounts, installs, or access to the product. Concurrent connections are narrower: they show how many connections are open at the same moment.

A sports app is a useful example. Most of the day, it may be quiet. Then a big match starts, and people open the app together: some join the match chat, some follow live updates, some watch the stream. The user base has not changed, but the live load has.

That peak is the part that can hurt. Average traffic may look safe, while one live moment creates a very different pressure on the system.

Why Concurrent Connections Matter

An open connection is not just an empty number in analytics. The system still has to keep track of it, know whether it is alive, send the right events to it, and notice when the client drops away.

At scale, this starts touching practical infrastructure questions:

• server load and connection limits;
• load balancing between machines;
• heartbeat traffic;
• message routing and delivery;
• recovery when one server fails.

If the product cannot carry that many open connections, users notice it quickly. Messages arrive late, live updates disappear, reactions do not show up, or the session simply drops.

Concurrent Connections in Digital Communities

For digital communities, this number says more about live activity than a large user base does. The real question is how many people are present at the same time — watching, chatting, reacting, or following the same event together.

This is why the metric is closely connected with real-time chat, live streaming, fan engagement, and Quality of Experience. When many users connect at once, the product has to stay fast, stable, and synchronised.
In short, concurrent connections show how much live load the product is carrying at that moment.

Read how to integrate high-quality community real-time chats on your platform