Struct CompressionLayer 

pub struct CompressionLayer { /* private fields */ }

A response-compression policy. See the module docs.

Implementations

impl CompressionLayer

pub fn new() -> Self

Defaults: compress responses of at least 1 KiB, prefer brotli when the client’s Accept-Encoding offers it (brotli compresses tighter; gzip is the universal fallback), brotli quality 4.

pub fn min_size(self, bytes: usize) -> Self

Don’t compress bodies smaller than bytes. Below the threshold the encoder’s framing overhead and the CPU cost outweigh the savings (and a small response usually fits in one packet anyway).

pub fn prefer_gzip(self) -> Self

When the client offers both gzip and br, choose gzip. (Brotli is the default — it’s tighter, especially for JSON, at a small CPU cost.)

pub fn brotli_quality(self, q: u32) -> Self

Brotli compression quality (0 = fastest / least compressed, 11 = slowest / tightest). Default is 4 — the speed/ratio sweet spot for per-request dynamic content. Quality 11 is 10-100× slower for roughly 5% additional savings; it’s appropriate for pre-compressed static assets, not for per-request work.

Values above 11 are clamped to 11. Named for the codec it controls: it has no effect on gzip (which uses flate2’s default level, 6); a gzip_level(_) knob can be added alongside if/when needed.

Trait Implementations

impl Clone for CompressionLayer

fn clone(&self) -> CompressionLayer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompressionLayer

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

Formats the value using the given formatter.

impl Default for CompressionLayer

fn default() -> Self

Returns the “default value” for a type.