Struct ResultCache 

pub struct ResultCache { /* private fields */ }

LRU + version-stamped result cache.

Implementations

impl ResultCache

pub fn new_default() -> Self

Create a new cache with the default capacity.

pub fn with_capacity(cap: NonZeroUsize) -> Self

Create a new cache with the given capacity.

pub fn normalize_query(query: &str) -> String

Normalize a query string: lowercase + collapse whitespace.

pub fn make_key(query: &str, user: Option<&str>) -> CacheKey

Build a cache key from a query and an optional user.

pub fn get(&self, key: &CacheKey) -> Option<Vec<MessageId>>

Look up an entry. Returns Some(ids) only if the entry exists AND its stamp matches the current global version (i.e. it has not been invalidated by a write).

pub fn put(&self, key: CacheKey, ids: Vec<MessageId>)

Insert (or replace) an entry stamped at the current version.

pub fn invalidate_all(&self)

Bump the invalidation version. Called after any successful index mutation (add or delete). All subsequent lookups will treat existing entries as stale until they are re-populated.

pub fn len(&self) -> usize

Return the current number of entries in the cache.

pub fn version(&self) -> u64

Return the current invalidation version (test helper / observability).

pub fn is_empty(&self) -> bool

Whether the cache currently holds zero entries.

Trait Implementations

impl Default for ResultCache

fn default() -> Self

Returns the “default value” for a type.