Trait foca::Invalidates

pub trait Invalidates {
    fn invalidates(&self, other: &Self) -> bool;
}

A type that’s able to look at another and decide wether it’s newer/fresher (i.e. invalidates) than it.

As you send/receive broadcasts, Foca will hold them for a while as it disseminates the data to other cluster members. This trait helps with replacing data that hasn’t been fully disseminated yet but you already know it’s stale.

Example: Assume a versioned broadcast like {key,version,...}; After you receive {K, 0, ...} and keep it, Foca will be disseminating it. Soon after you receive {K, 1, ...} which is a newer version for this broadcast. This trait enables Foca to immediately stop disseminating the previous version, even if it hasn’t sent it to everyone it can yet.

Required Methods

fn invalidates(&self, other: &Self) -> bool

When item.invalidates(&other) it means that Foca will keep item and discard other from its dissemination backlog.

Implementations on Foreign Types

impl<'a> Invalidates for &'a [u8]

fn invalidates(&self, other: &Self) -> bool

Implementors