Trait Cache

pub trait Cache: Clone {
    // Required methods
    fn get<'life0, 'life1, 'async_trait, T>(
        &'life0 self,
        key: &'life1 str,
    ) -> Pin<Box<dyn Future<Output = Result<Option<T>>> + Send + 'async_trait>>
       where T: 'async_trait + Cacheable + Send + Sync,
             Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn set<'life0, 'life1, 'async_trait, T>(
        &'life0 self,
        key: &'life1 str,
        value: T,
    ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
       where T: 'async_trait + Cacheable + Send + Sync,
             Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn delete<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 str,
    ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn len<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = Result<usize>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
}

A cache trait.

It describes the basic operations of a cache. All functions are async, because we may use async storage backends.

Required Methods

fn get<'life0, 'life1, 'async_trait, T>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Option<T>>> + Send + 'async_trait>>

where T: 'async_trait + Cacheable + Send + Sync, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

fn set<'life0, 'life1, 'async_trait, T>( &'life0 self, key: &'life1 str, value: T, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

where T: 'async_trait + Cacheable + Send + Sync, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

fn delete<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

fn len<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<usize>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

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

impl Cache for MemoryCache

impl Cache for MySqlCache

Available on crate feature mysql only.

impl Cache for RedisCache

Available on crate feature redis only.