"When we published Playground, the Fortnite Items overpowering need quickly exhausted the local lists for MMS nodes much faster than the system could refresh them. Every node was running to each other node to request additional servers which just weren't there yet, or at least took a long time to select out of the non-local lists.
The long compute times caused the CPU to end up with a backlog of pending orders, leading to a feedback loop which eventually resulted in the system to grind to a halt."
It required Epic longer than they expected to correct the problems, but finally the fortnite weapons manner returned on July 2. Epic states that the solution included giving the Playground Mode its service cluster and to then give that support cluster the ability to re-balance sessions from other nodes:"After we identified the root of this problem as the fatigue of sessions from local listings, the alternative was to provide the cluster the ability to majority rebalance sessions from other nodes to ensure repeated lookups weren't vital.
Together with the system constantly shifting regional power from nodes having too much nodes that might be running low, the odds of some node running dry for a Specific region and needing to seek out outside its local record have been drastically reduced,