How To Make A Serverside Hub Part 2/2 (Trusted)

What happens when the hub tries to send data to a service that is offline?

This second part of our series dives into the of your server-side hub. If Part 1 was about setting the stage (infrastructure and basic routing), Part 2 is about making the gears turn—handling data persistence, real-time synchronization, and security. How To Make A Serverside Hub Part 2/2

Start by implementing a simple Redis cache to see how much it improves your hub’s response times! What happens when the hub tries to send

Use Socket.io (Node.js) or SignalR (.NET). This creates a "persistent pipe" between the hub and the users. Start by implementing a simple Redis cache to

When a request hits your hub, the server should check the cache (Redis) first. If the data isn't there, fetch it from the main DB and update the cache for next time. 2. Real-Time Synchronization (WebSockets)

If you are using WebSockets, ensure your load balancer supports "sticky sessions" so a user stays connected to the same hub instance during their session. Conclusion

When Server A receives an update, it sends a message to the Hub. The Hub then broadcasts that message only to the specific clients who need to see it, reducing unnecessary bandwidth. 3. Security: The "Gatekeeper" Role