Struct KvSeparationOptions 

pub struct KvSeparationOptions {
    pub compression: CompressionType,
    /* private fields */
}

Options for key-value separation

Fields

compression: CompressionType

What type of compression is used for blobs

Implementations

impl KvSeparationOptions

pub fn compression(self, compression: CompressionType) -> Self

Sets the blob compression method.

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

Sets the target size of blob files.

Smaller blob files allow more granular garbage collection which allows lower space amp for lower write I/O cost.

Larger blob files decrease the number of files on disk and maintenance overhead.

Defaults to 64 MiB.

pub fn separation_threshold(self, bytes: u32) -> Self

Sets the key-value separation threshold in bytes.

Smaller value will reduce compaction overhead and thus write amplification, at the cost of lower read performance.

Defaults to 1 KiB.

pub fn staleness_threshold(self, ratio: f32) -> Self

Sets the staleness threshold percentage.

The staleness percentage determines how much a blob file needs to be fragmented to be picked up by the garbage collection.

Defaults to 33%.

pub fn age_cutoff(self, ratio: f32) -> Self

Sets the age cutoff threshold.

Defaults to 20%.

Trait Implementations

impl Clone for KvSeparationOptions

fn clone(&self) -> KvSeparationOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KvSeparationOptions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for KvSeparationOptions

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for KvSeparationOptions

fn eq(&self, other: &KvSeparationOptions) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for KvSeparationOptions