Nigeria relatively little violence or voter fraud, in contrast to previous elections. In the March 2015 election, Muhammadu Buhari defeated Goodluck Jonathan by roughly 2 million votes. Observers generally praised the election as being fair. Jonathan was generally praised for conceding defeat and limiting the risk of unrest. Nigeria is a federal republic modelled after the United States, with executive power exercised by the President. It is influenced by the Westminster System model in the composition and management of the upper and lower houses of the bicameral legislature. The president presides as both head of state and head of the federal
Optimistic replication the other, a conflict will be found. The system must, in this case, decide which update finally "wins", and arrange for any nodes that have already applied the losing update to revert it. However, some nodes may temporarily expose the state with the reverted update, and there may be no way to inform the user who initiated the update of its failure, without requiring them to wait (potentially forever) for confirmation of acceptance at every node. Optimistic replication Optimistic replication (also known as lazy replication) is a strategy for replication in which replicas are allowed to diverge. Traditional pessimistic replication