Trait Plugin 

pub trait Plugin: Send + Sync {
    // Required methods
    fn name(&self) -> &str;
    fn on_event(&self, event: &CacheEvent);

    // Provided method
    fn on_start(&self) { ... }
}

A cache plugin: observes events and lifecycle transitions.

Register plugins via CacheBuilder::plugin.

Required Methods

fn name(&self) -> &str

A short name used in diagnostics.

fn on_event(&self, event: &CacheEvent)

Called for every CacheEvent the cache emits.

Provided Methods

fn on_start(&self)

Called once when the owning cache is built and the plugin is attached.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors