Struct TileCacheStrategy 

pub struct TileCacheStrategy {
    pub zoom_policies: Vec<(u8, u8, CachePolicy)>,
    pub default_policy: CachePolicy,
}

Zoom-level-aware caching strategy for map tiles.

Fields

zoom_policies: Vec<(u8, u8, CachePolicy)>

Ordered list of (min_zoom, max_zoom, policy) bands.

default_policy: CachePolicy

Fallback policy when no band matches the requested zoom level.

Implementations

impl TileCacheStrategy

pub fn new() -> Self

Creates an empty strategy with NoCache as the fallback.

pub fn standard_tile_strategy() -> Self

Returns the standard multi-tier tile caching strategy:

Zoom	Policy
0–7	public, 24 h, swr 1 h, sie 7 d
8–12	public, 1 h, swr 60 s, sie 24 h
13–16	public, 5 min, swr 30 s, sie 1 h
17–22	no-cache

pub fn policy_for_zoom(&self, zoom: u8) -> &CachePolicy

Returns the CachePolicy appropriate for the given zoom level.

pub fn headers_for_tile(&self, zoom: u8, tile_data: &[u8]) -> CacheHeaders

Builds CacheHeaders for a tile at zoom with content tile_data.

The ETag is derived from the tile bytes; Vary: Accept-Encoding is always set.

Trait Implementations

impl Clone for TileCacheStrategy

fn clone(&self) -> TileCacheStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TileCacheStrategy

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

Formats the value using the given formatter.

impl Default for TileCacheStrategy

fn default() -> Self

Returns the “default value” for a type.