Struct scylla::CachingSession

pub struct CachingSession<S = RandomState>
where
    S: Clone + BuildHasher,
{ /* private fields */ }

Provides auto caching while executing queries

Implementations

impl<S> CachingSession<S>

where S: Default + BuildHasher + Clone,

pub fn from(session: Session, cache_size: usize) -> Self

impl<S> CachingSession<S>

where S: BuildHasher + Clone,

pub fn with_hasher(session: Session, cache_size: usize, hasher: S) -> Self

Builds a CachingSession from a Session, a cache size, and a BuildHasher., using a customer hasher.

pub async fn execute( &self, query: impl Into<Query>, values: impl SerializeRow ) -> Result<QueryResult, QueryError>

Does the same thing as Session::execute but uses the prepared statement cache

pub async fn execute_iter( &self, query: impl Into<Query>, values: impl SerializeRow ) -> Result<RowIterator, QueryError>

Does the same thing as Session::execute_iter but uses the prepared statement cache

pub async fn execute_paged( &self, query: impl Into<Query>, values: impl SerializeRow, paging_state: Option<Bytes> ) -> Result<QueryResult, QueryError>

Does the same thing as Session::execute_paged but uses the prepared statement cache

pub async fn batch( &self, batch: &Batch, values: impl BatchValues ) -> Result<QueryResult, QueryError>

Does the same thing as Session::batch but uses the prepared statement cache
Prepares batch using CachingSession::prepare_batch if needed and then executes it

pub async fn prepare_batch(&self, batch: &Batch) -> Result<Batch, QueryError>

Prepares all statements within the batch and returns a new batch where every statement is prepared. Uses the prepared statements cache.

pub async fn add_prepared_statement( &self, query: impl Into<&Query> ) -> Result<PreparedStatement, QueryError>

Adds a prepared statement to the cache

pub fn get_max_capacity(&self) -> usize

pub fn get_session(&self) -> &Session

Trait Implementations

impl<S> Debug for CachingSession<S>

where S: Clone + BuildHasher + Debug,

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

Formats the value using the given formatter.