If your traders or logistics managers are hitting F5 to see the latest stock price or truck location, your architecture is failing them. Polling the database every 5 seconds kills your server. You need persistent connections.
WebSockets: The Open Line
We use WebSockets (often via Django Channels or FastAPI) to keep a permanent, two-way connection open between the client and the server. When an event happens (e.g., a new order comes in), the server "pushes" the data to the frontend instantly. No refreshing required.
The Event-Driven Stack
Real-time isn't just about the frontend. It requires a backend that listens:
- Kafka/Redis: The central nervous system. It captures events as they happen.
- Worker Nodes: Processes the event (e.g., checks for fraud) in milliseconds.
- Push Layer: Sends the result to the user's dashboard via WebSocket.
Case in Point
"A logistics company needed to track 500 trucks live. Their old SQL polling system crashed every day at noon. We rebuilt it with Redis and WebSockets. Now, map updates are sub-second, and server load dropped by 90%."
Seconds Matter
In finance and logistics, stale data leads to bad decisions. Go live.
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