value_log

Struct Config

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pub struct Config<C: Compressor + Clone> { /* private fields */ }
Expand description

Value log configuration

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impl<C: Compressor + Clone> Config<C>

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pub fn compression(self, compressor: C) -> Self

Sets the compression & decompression scheme.

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pub fn blob_cache(self, blob_cache: Arc<BlobCache>) -> Self

Sets the blob cache.

You can create a global BlobCache and share it between multiple value logs to cap global cache memory usage.

Defaults to a blob cache with 16 MiB of capacity per value log.

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pub fn segment_size_bytes(self, bytes: u64) -> Self

Sets the maximum size of value log segments.

This heavily influences space amplification, as space reclamation works on a per-segment basis.

Like blob_file_size in RocksDB.

Default = 256 MiB

Trait Implementations§

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impl<C: Compressor + Clone + Default> Default for Config<C>

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<C> Freeze for Config<C>
where C: Freeze,

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impl<C> RefUnwindSafe for Config<C>
where C: RefUnwindSafe,

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impl<C> Send for Config<C>
where C: Send,

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impl<C> Sync for Config<C>
where C: Sync,

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impl<C> Unpin for Config<C>
where C: Unpin,

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impl<C> UnwindSafe for Config<C>
where C: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.