State Synchronization
State synchronization is the process by which all nodes in a distributed network arrive at the same view of the current state of the ledger. This includes the balances of all accounts, the code of all smart contracts, and the status of all active orders.
Because nodes can join and leave the network at any time, they must be able to catch up to the current state efficiently. This is done through a combination of downloading historical blocks and verifying the state root.
In financial applications, state synchronization is critical to ensure that all participants see the same prices and collateral levels. If a node is out of sync, it might make incorrect decisions, such as attempting to liquidate a position that is actually solvent.
Ensuring fast and accurate state sync is a major technical challenge for blockchain scalability. It is the process of maintaining a single, coherent reality across a global network.