Struct Cache

pub struct Cache { /* private fields */ }

Primary cache abstraction.

Can be cheaply cloned and namespaced.

Implementations

impl Cache

pub fn load(db: Tree) -> Result<Cache, Error>

Load the cache from the database.

pub fn delete_with_ns<N, K>(&self, ns: Option<&N>, key: &K) -> Result<(), Error>

where N: Serialize, K: Serialize,

Delete the given key from the specified namespace.

pub fn list_json(&self) -> Result<Vec<JsonEntry>, Error>

List all cache entries as JSON.

pub fn namespaced<N>(&self, ns: &N) -> Result<Self, Error>

where N: Serialize,

Create a namespaced cache.

The namespace must be unique to avoid conflicts.

Each call to this functions will return its own queue for resolving futures.

pub fn insert<K, T>( &self, key: K, age: Duration, value: &T, ) -> Result<(), Error>

where K: Serialize, T: Serialize,

Insert a value into the cache.

pub fn test<K>(&self, key: K) -> Result<State<()>, Error>

where K: Serialize,

Test an entry from the cache.

pub fn get<K, T>(&self, key: K) -> Result<State<T>, Error>

where K: Serialize, T: DeserializeOwned,

Load an entry from the cache.

pub async fn wrap<K, F, T, E>( &self, key: K, age: Duration, future: F, ) -> Result<T, E>

where K: Serialize, F: Future<Output = Result<T, E>>, T: Serialize + DeserializeOwned, E: From<Error>,

Wrap the result of the given future to load and store from cache.

Trait Implementations

impl Clone for Cache

fn clone(&self) -> Cache

Returns a duplicate of the value.

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

Performs copy-assignment from source.