Struct HttpCache 

pub struct HttpCache { /* private fields */ }

A simple memory cache. Elements will be evicted based on the cache heuristic. We weight elements by the number of entries per given url. We evict currently a whole url. The cache makes extensive use of Arc::unwrap_or_clone or and Arc::into_inner to modify the cached entries. This is ok because CachedResource are cheap to clone

Implementations

impl HttpCache

pub async fn store(&self, request: &Request, response: &Response)

Insert a response for request into the cache (used by tests that need direct access).

pub async fn construct_response( &self, request: &Request, done_chan: &mut DoneChannel, ) -> Option<Response>

Try to construct a cached response for request.

pub async fn get_or_guard( &self, entry_key: CacheKey, ) -> CachedResourcesOrGuard<'_>

If the value exist in the cache, return it. If the value does not exist, return a guard you can use to insert values in the cache. If the guard is alive, all other accesses to this function will block.

Trait Implementations

impl Default for HttpCache

fn default() -> Self

Returns the “default value” for a type.

impl MallocSizeOf for HttpCache

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.