Struct ConversationCache 

pub struct ConversationCache { /* private fields */ }

Sharded LRU cache for ConversationView to reduce lock contention.

Caching conversation views avoids:

• Database queries (conversation + messages)
• JSON parsing (metadata_json, extra_json)

This is particularly beneficial for:

• TUI scrolling (repeated access to same results)
• Detail view expansion (view -> expand -> view pattern)

Implementations

impl ConversationCache

pub fn new(capacity_per_shard: usize) -> Self

Create a new cache with the specified capacity per shard.

pub fn get( &self, source_id: Option<&str>, source_path: &str, ) -> Option<Arc<ConversationView>>

Get a cached conversation view by source identity.

pub fn get_scoped( &self, cache_scope: &str, source_id: Option<&str>, source_path: &str, ) -> Option<Arc<ConversationView>>

Get a cached conversation view scoped to a specific database identity.

pub fn insert( &self, source_id: Option<&str>, source_path: &str, view: ConversationView, ) -> Arc<ConversationView>

Insert a conversation view into the cache.

pub fn insert_scoped( &self, cache_scope: &str, source_id: Option<&str>, source_path: &str, view: ConversationView, ) -> Arc<ConversationView>

Insert a conversation view into the cache scoped to a specific database identity.

pub fn invalidate(&self, source_id: Option<&str>, source_path: &str)

Invalidate a specific cache entry by source identity.

pub fn invalidate_scoped( &self, cache_scope: &str, source_id: Option<&str>, source_path: &str, )

Invalidate a specific cache entry scoped to a specific database identity.

pub fn invalidate_all(&self)

Invalidate all cache entries.

pub fn stats(&self) -> &CacheStats

Get cache statistics.

pub fn len(&self) -> usize

Get total number of cached entries across all shards.

pub fn is_empty(&self) -> bool

Check if cache is empty.