Enum raft::ReadOnlyOption

pub enum ReadOnlyOption {
    Safe,
    LeaseBased,
}

Determines the relative safety of and consistency of read only requests.

Variants

Safe

Safe guarantees the linearizability of the read only request by communicating with the quorum. It is the default and suggested option.

LeaseBased

LeaseBased ensures linearizability of the read only request by relying on the leader lease. It can be affected by clock drift. If the clock drift is unbounded, leader might keep the lease longer than it should (clock can move backward/pause without any bound). ReadIndex is not safe in that case.

Trait Implementations

impl Clone for ReadOnlyOption

fn clone(&self) -> ReadOnlyOption

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ReadOnlyOption

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ReadOnlyOption

fn default() -> ReadOnlyOption

Returns the “default value” for a type.

impl PartialEq<ReadOnlyOption> for ReadOnlyOption

fn eq(&self, other: &ReadOnlyOption) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Copy for ReadOnlyOption

impl StructuralPartialEq for ReadOnlyOption