Enum CompressionCodec 

pub enum CompressionCodec {
    None,
    Lz4,
    Zstd,
}

Compression codec for disk cache storage

Variants

None

No compression (fastest, largest disk usage)

Lz4

LZ4 compression (fast, ~60% reduction for typical NNTP articles, default)

Uses SIMD (SSE2/AVX2) auto-detection for maximum throughput. Compression level: fast mode (default).

Zstd

Zstandard compression (better ratio, moderate CPU overhead)

Uses SIMD (SSE2/AVX2/AVX512) auto-detection. Compression level: 3 (library default, balanced speed/ratio).

Trait Implementations

impl Clone for CompressionCodec

fn clone(&self) -> CompressionCodec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CompressionCodec

impl Debug for CompressionCodec

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

Formats the value using the given formatter.

impl Default for CompressionCodec

fn default() -> CompressionCodec

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for CompressionCodec

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for CompressionCodec

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

Formats the value using the given formatter.

impl Eq for CompressionCodec

impl PartialEq for CompressionCodec

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for CompressionCodec

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 CompressionCodec

impl ValueEnum for CompressionCodec

fn value_variants<'a>() -> &'a [Self]

All possible argument values, in display order.

fn to_possible_value<'a>(&self) -> Option<PossibleValue>

The canonical argument value.

fn from_str(input: &str, ignore_case: bool) -> Result<Self, String>

Parse an argument into Self.