Leader Election, Replication, and Split Brain in Distributed Systems

https://codefrontier.alderbrief.com/posts/leader-election-replication-and-split-brain-in-distributed-systems

Leader election, replication, and split brain in distributed systems describe how multiple servers coordinate data and authority. Leader election chooses a primary node to manage writes, while replication copies data across nodes for fault tolerance. Split brain occurs when network failure causes two nodes to act as leaders, risking data inconsistency. This scenario challenges system designers to maintain consensus and avoid conflicts.