Trait KeyValueStore 

pub trait KeyValueStore {
    type Error;

    // Required methods
    async fn load(
        &self,
        key: &[u8],
        buf: &mut [u8],
    ) -> Result<Option<usize>, Self::Error>;
    async fn store(&self, key: &[u8], value: &[u8]) -> Result<(), Self::Error>;
    async fn delete(&self, key: &[u8]) -> Result<(), Self::Error>;
}

Persistent key-value store used by higher layers for cached state.

Required Associated Types

type Error

Required Methods

async fn load( &self, key: &[u8], buf: &mut [u8], ) -> Result<Option<usize>, Self::Error>

Load a value into buf, returning the stored length when present.

async fn store(&self, key: &[u8], value: &[u8]) -> Result<(), Self::Error>

Store a value for key.

async fn delete(&self, key: &[u8]) -> Result<(), Self::Error>

Delete any stored value for key.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors