openraft 0.9.23

Advanced Raft consensus
Documentation 
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use std::time::Duration;

#[derive(Clone, Debug)]
#[derive(PartialEq, Eq)]
pub(crate) struct Config {
    /// The time interval after which the next election will be initiated once the current lease has
    /// expired.
    pub(crate) election_timeout: Duration,

    /// If this node has a smaller last-log-id than others, it will be less likely to be elected as
    /// a leader. In this case, it is necessary to sleep for a longer period of time
    /// `smaller_log_timeout` so that other nodes with a greater last-log-id have a chance to elect
    /// themselves.
    ///
    /// Note that this value should be greater than the `election_timeout` of every other node.
    pub(crate) smaller_log_timeout: Duration,

    /// The duration of an active leader's lease.
    ///
    /// When a follower or learner perceives an active leader, such as by receiving an AppendEntries
    /// message, it should not grant another candidate to become the leader during this period.
    pub(crate) leader_lease: Duration,
}

impl Default for Config {
    fn default() -> Self {
        Self {
            election_timeout: Duration::from_millis(150),
            smaller_log_timeout: Duration::from_millis(200),
            leader_lease: Duration::from_millis(150),
        }
    }
}