How To Make A Serverside Hub Part 2/2 May 2026

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

Build a mechanism where the hub attempts to re-send failed requests 3 times before giving up. How To Make A Serverside Hub Part 2/2

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) What happens when the hub tries to send

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 If the data isn't there, fetch it from

Start by implementing a simple Redis cache to see how much it improves your hub’s response times!

Run multiple instances of your hub behind a Load Balancer .

For a hub, Redis is often the gold standard. It’s an in-memory data store, meaning it’s incredibly fast for real-time updates. If you need long-term storage (like user profiles), pair it with a relational database like PostgreSQL .