Struct launchdarkly_server_sdk::PersistentDataStoreBuilder

pub struct PersistentDataStoreBuilder { /* private fields */ }

Used to create a PersistentDataStoreWrapper instance, which wraps a PersistentDataStore.

Implementations

impl PersistentDataStoreBuilder

pub fn new(factory: Arc<dyn PersistentDataStoreFactory>) -> Self

Create a new PersistentDataStoreBuilder configured with the provided PersistentDataStoreFactory and a default cache lifetime.

pub fn cache_time(&mut self, cache_ttl: Duration) -> &mut Self

Specifies the cache TTL. Items will be evicted from the cache after this amount of time from the time when they were originally cached.

If the value is zero, caching is disabled (equivalent to PersistentDataStoreBuilder::no_caching).

pub fn cache_seconds(&mut self, seconds: u64) -> &mut Self

Shortcut for calling PersistentDataStoreBuilder::cache_time with a duration in seconds.

pub fn cache_forever(&mut self) -> &mut Self

Specifies that the in-memory cache should never expire. In this mode, data will be written to both the underlying persistent store and the cache, but will only ever be read from the persistent store if the SDK is restarted.

Use this mode with caution: it means that in a scenario where multiple processes are sharing the database, and the current process loses connectivity to LaunchDarkly while other processes are still receiving updates and writing them to the database, the current process will have stale data.

pub fn no_caching(&mut self) -> &mut Self

Specifies that the SDK should not use an in-memory cache for the persistent data store. This means that every feature flag evaluation will trigger a data store query.

Trait Implementations

impl Clone for PersistentDataStoreBuilder

fn clone(&self) -> PersistentDataStoreBuilder

Returns a copy of the value.

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

Performs copy-assignment from source.