Struct MemoryState 

pub struct MemoryState { /* private fields */ }

In-memory State. Cheap to share behind an Arc.

Implementations

impl MemoryState

pub fn new() -> Self

Empty in-memory state.

pub fn from_snapshot(entries: Map<String, Value>) -> Self

Rebuild from a persisted snapshot. TTLs are not persisted: a durable instance’s expiry is owned by its lifecycle, not by per-key timers.

pub fn snapshot(&self) -> Map<String, Value>

Every live (non-expired) key, ready to be persisted as JSON.

Trait Implementations

impl Default for MemoryState

fn default() -> MemoryState

Returns the “default value” for a type.

impl State for MemoryState

fn append<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, item: Value, max_len: Option<usize>, ttl: Option<Duration>, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Append item to the list at key, keeping at most max_len entries (oldest dropped first). Creates the list if absent. ttl bounds the key’s lifetime.

fn set<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, value: Value, ttl: Option<Duration>, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Set key to value (overwrite), with optional ttl.

fn get<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = Option<Value>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Read key, or None if absent/expired.