2/2 — How To Make A Serverside Hub Part

Build a mechanism where the hub attempts to re-send failed requests 3 times before giving up.

Since the hub is the central point of contact, it is also the primary target for attacks. How To Make A Serverside Hub Part 2/2

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. Build a mechanism where the hub attempts to

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 Part 1 was about setting the stage

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)

A hub is useless if it forgets information the moment a user refreshes. You need a way to store "state"—who is online, what settings are active, and what messages are pending.

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