Enum Compression 

pub enum Compression {
    None,
    Zstd {
        level: i32,
    },
    Lz4,
}

Compression applied to the snapshot payload on save (v0.4+).

Zstd and Lz4 are gated behind the zstd / lz4 cargo features. Selecting a scheme whose feature is not compiled in returns crate::PersistError::Unsupported at crate::PersistedIndex construction — never a panic or a silent fallback. Compression applies only to snapshots; the WAL is always stored uncompressed.

Examples

use iqdb_persist::Compression;

let none = Compression::None;
let zstd = Compression::Zstd { level: 3 };
let lz4 = Compression::Lz4;
let _ = (none, zstd, lz4);

Variants

None

No compression — the payload is stored verbatim. Always available.

Zstd

Zstandard compression at the given level (requires the zstd feature). Best ratio; level must be in 1..=22.

Fields

level: i32

The Zstd compression level (1–22).

Lz4

LZ4 compression (requires the lz4 feature). Fastest; lower ratio.

Trait Implementations

impl Clone for Compression

fn clone(&self) -> Compression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Compression

impl Debug for Compression

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Compression

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Compression

impl PartialEq for Compression

fn eq(&self, other: &Compression) -> 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 Serialize for Compression

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Compression