Struct RevalidationHint 

pub struct RevalidationHint {
    pub etag: Option<String>,
    pub last_modified: Option<String>,
}

Hints passed to TileSource::request_revalidate so that the implementation can build conditional-request headers.

Both fields are Option because the original response may not have included these validators. When present, implementations should send If-None-Match (for etag) and/or If-Modified-Since (for last_modified) headers. If the server responds 304 Not Modified, the source should return a TileResponse::not_modified result so the cache refreshes its TTL without re-decoding the payload.

Fields

etag: Option<String>

Value of the ETag header from the previous response.

last_modified: Option<String>

Value of the Last-Modified header from the previous response.

Implementations

impl RevalidationHint

pub fn has_validators(&self) -> bool

Whether this hint carries at least one usable validator.

Trait Implementations

impl Clone for RevalidationHint

fn clone(&self) -> RevalidationHint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RevalidationHint

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

Formats the value using the given formatter.

impl Default for RevalidationHint

fn default() -> RevalidationHint

Returns the “default value” for a type.