pub struct AutoSpillBackend<O, F> {
backend_type: BackendType<O>,
auto_spill_threshold_bytes: usize,
rocksdb_autospill_in_use: Arc<DeleteOnDropGauge<'static, AtomicU64, Vec<String>>>,
rocksdb_init_fn: Option<F>,
}
Fields§
§backend_type: BackendType<O>
§auto_spill_threshold_bytes: usize
§rocksdb_autospill_in_use: Arc<DeleteOnDropGauge<'static, AtomicU64, Vec<String>>>
§rocksdb_init_fn: Option<F>
Implementations§
Source§impl<O, F, Fut> AutoSpillBackend<O, F>
impl<O, F, Fut> AutoSpillBackend<O, F>
Trait Implementations§
Source§impl<O, F, Fut> UpsertStateBackend<O> for AutoSpillBackend<O, F>
impl<O, F, Fut> UpsertStateBackend<O> for AutoSpillBackend<O, F>
Source§fn supports_merge(&self) -> bool
fn supports_merge(&self) -> bool
Whether this backend supports the
multi_merge
operation.Source§fn multi_put<'life0, 'async_trait, P>(
&'life0 mut self,
puts: P,
) -> Pin<Box<dyn Future<Output = Result<PutStats, Error>> + 'async_trait>>where
P: IntoIterator<Item = (UpsertKey, PutValue<StateValue<O>>)> + 'async_trait,
Self: 'async_trait,
'life0: 'async_trait,
fn multi_put<'life0, 'async_trait, P>(
&'life0 mut self,
puts: P,
) -> Pin<Box<dyn Future<Output = Result<PutStats, Error>> + 'async_trait>>where
P: IntoIterator<Item = (UpsertKey, PutValue<StateValue<O>>)> + 'async_trait,
Self: 'async_trait,
'life0: 'async_trait,
Insert or delete for all
puts
keys, prioritizing the last value for
repeated keys. Read moreSource§fn multi_merge<'life0, 'async_trait, M>(
&'life0 mut self,
merges: M,
) -> Pin<Box<dyn Future<Output = Result<MergeStats, Error>> + 'async_trait>>where
M: IntoIterator<Item = (UpsertKey, MergeValue<StateValue<O>>)> + 'async_trait,
Self: 'async_trait,
'life0: 'async_trait,
fn multi_merge<'life0, 'async_trait, M>(
&'life0 mut self,
merges: M,
) -> Pin<Box<dyn Future<Output = Result<MergeStats, Error>> + 'async_trait>>where
M: IntoIterator<Item = (UpsertKey, MergeValue<StateValue<O>>)> + 'async_trait,
Self: 'async_trait,
'life0: 'async_trait,
For each key in
merges
writes a ‘merge operand’ to the backend. The backend stores these
merge operands and periodically calls the snapshot_merge_function
to merge them into
any existing value for each key. The backend will merge the merge operands in the order
they are provided, and the merge function will always be run for a given key when a get
operation is performed on that key, or when the backend decides to run the merge based
on its own internal logic.
This allows avoiding the read-modify-write method of updating many values to
improve performance. Read moreSource§fn multi_get<'r, 'life0, 'async_trait, G, R>(
&'life0 mut self,
gets: G,
results_out: R,
) -> Pin<Box<dyn Future<Output = Result<GetStats, Error>> + 'async_trait>>where
G: IntoIterator<Item = UpsertKey> + 'async_trait,
R: IntoIterator<Item = &'r mut UpsertValueAndSize<O>> + 'async_trait,
O: 'r,
Self: 'async_trait,
'r: 'async_trait,
'life0: 'async_trait,
fn multi_get<'r, 'life0, 'async_trait, G, R>(
&'life0 mut self,
gets: G,
results_out: R,
) -> Pin<Box<dyn Future<Output = Result<GetStats, Error>> + 'async_trait>>where
G: IntoIterator<Item = UpsertKey> + 'async_trait,
R: IntoIterator<Item = &'r mut UpsertValueAndSize<O>> + 'async_trait,
O: 'r,
Self: 'async_trait,
'r: 'async_trait,
'life0: 'async_trait,
Auto Trait Implementations§
impl<O, F> Freeze for AutoSpillBackend<O, F>where
F: Freeze,
impl<O, F> !RefUnwindSafe for AutoSpillBackend<O, F>
impl<O, F> Send for AutoSpillBackend<O, F>
impl<O, F> Sync for AutoSpillBackend<O, F>
impl<O, F> Unpin for AutoSpillBackend<O, F>
impl<O, F> !UnwindSafe for AutoSpillBackend<O, F>
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