Enum Residency 

pub enum Residency {
    KeepAll,
    ActivePathOnly,
}

Where session nodes live at runtime.

lash owns RAM; the host owns disk lifecycle. Under ActivePathOnly the runtime trims orphans from memory on load, but disk-side retention (tombstoning + vacuum) is the host’s decision — call LashRuntime::orphaned_node_ids when you want the current orphan set and feed it into store.tombstone_nodes / store.vacuum on whatever schedule fits your deployment.

Variants

KeepAll

Every node resident in RAM. Default. Best for interactive / branching UX where the user may rewind.

ActivePathOnly

Only nodes reachable from leaf_node_id are resident. Orphans live on disk and are loaded on demand via LashRuntime::get_historic_node. Best for webserver embedders with many concurrent idle sessions, and for autonomous agents (combined with host-scheduled tombstone_nodes + vacuum).

Trait Implementations

impl Clone for Residency

fn clone(&self) -> Residency

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Residency

impl Debug for Residency

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

Formats the value using the given formatter.

impl Default for Residency

fn default() -> Residency

Returns the “default value” for a type.

impl Eq for Residency

impl PartialEq for Residency

fn eq(&self, other: &Residency) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Residency