Struct async_skipdb::comparable::ComparableDB

pub struct ComparableDB<K, V, S> { /* private fields */ }

A concurrent ACID, MVCC in-memory database based on crossbeam-skiplist.

ComparableDB requires key to be Ord and CheapClone. The CheapClone bound here hints the user that the key should be cheap to clone, because it will be cloned at least one time during the write transaction.

Comparing to EquivalentDB, ComparableDB does not require key to implement Hash. But, EquivalentDB has more flexible write transaction APIs.

Implementations

impl<K, V, S: AsyncSpawner> ComparableDB<K, V, S>

pub async fn new() -> Self

Creates a new ComparableDB with the given options.

impl<K, V, S: AsyncSpawner> ComparableDB<K, V, S>

pub async fn with_options(opts: Options) -> Self

Creates a new ComparableDB with the given options.

pub async fn version(&self) -> u64

Returns the current read version of the database.

pub async fn read( &self ) -> ReadTransaction<K, V, ComparableDB<K, V, S>, BTreeCm<K>, S>

Create a read transaction.

impl<K, V, S> ComparableDB<K, V, S>

where K: CheapClone + Ord, S: AsyncSpawner,

pub async fn write(&self) -> WriteTransaction<K, V, S>

Create a write transaction.

pub async fn write_with_capacity(&self, cap: usize) -> WriteTransaction<K, V, S>

Create a write transaction with the given capacity hint.

impl<K, V, S> ComparableDB<K, V, S>

where K: CheapClone + Ord + Send + 'static, V: Send + 'static, S: AsyncSpawner,

pub fn compact(&self)

Compact the database.

Trait Implementations

impl<K, V, S> Clone for ComparableDB<K, V, S>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.