Struct CacheKeyVariant 

pub struct CacheKeyVariant {
    pub at: usize,
    pub len: usize,
    pub alternatives: Arc<Vec<Vec<String>>>,
}

Components of the cache key that stand for something this request said - the coding it accepts, the image formats it takes - and that another request for the same url has others in the place of.

A PURGE is such another request: it names the url and says nothing of codings or formats. What it has to remove is the entry under every one of the alternatives, not only under its own.

Fields

at: usize

Where in keys its components start.

len: usize

How many of them there are for this request, which may be none.

alternatives: Arc<Vec<Vec<String>>>

Every list of components that can stand here, the empty one included.

Trait Implementations

impl Clone for CacheKeyVariant

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CacheKeyVariant

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

Formats the value using the given formatter.