Trait DataBlockCache

pub trait DataBlockCache<InsertError>:
    Send
    + Sync
    + Display
    + Sized
    + 'static {
    // Required methods
    fn new(
        capacity_mb: u64,
        block_size: u64,
        total_size: u64,
    ) -> Result<Self, CacheError<InsertError>>;
    fn get<'life0, 'async_trait>(
        &'life0 self,
        pos: u64,
    ) -> Pin<Box<dyn Future<Output = Option<RwLockReadGuard<'_, Block>>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn insert_lock<'life0, 'async_trait, A>(
        &'life0 self,
        pos: u64,
        f: impl 'async_trait + Future<Output = Result<A, InsertError>> + Send,
    ) -> Pin<Box<dyn Future<Output = Result<RwLockReadGuard<'_, Block>, CacheError<InsertError>>> + Send + 'async_trait>>
       where A: 'async_trait + AsRef<[u8]> + Send,
             Self: 'async_trait,
             'life0: 'async_trait;
    fn stats(&self) -> &CacheStats;
}

Block cache trait

Required Methods

fn new( capacity_mb: u64, block_size: u64, total_size: u64, ) -> Result<Self, CacheError<InsertError>>

Create a new block cache with given maximal capacity, block size, and cumulative size of all blocks.

fn get<'life0, 'async_trait>( &'life0 self, pos: u64, ) -> Pin<Box<dyn Future<Output = Option<RwLockReadGuard<'_, Block>>> + Send + 'async_trait>>

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

Get the block at a position.

fn insert_lock<'life0, 'async_trait, A>( &'life0 self, pos: u64, f: impl 'async_trait + Future<Output = Result<A, InsertError>> + Send, ) -> Pin<Box<dyn Future<Output = Result<RwLockReadGuard<'_, Block>, CacheError<InsertError>>> + Send + 'async_trait>>

where A: 'async_trait + AsRef<[u8]> + Send, Self: 'async_trait, 'life0: 'async_trait,

Insert a block at a position, locking until the output is ready.

fn stats(&self) -> &CacheStats

Caching statistics.

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<E> DataBlockCache<E> for IndexCache

impl<E> DataBlockCache<E> for LRUCache