Struct BTreePageCache 

pub struct BTreePageCache { /* private fields */ }

Shared page cache for B+Tree index pages

This type allows the cache to be shared across multiple BTreeManager instances, enabling cache persistence across backend reopen cycles.

Implementations

impl BTreePageCache

pub fn new(capacity: usize) -> Self

Create a new shared page cache with the given capacity

pub fn with_default_capacity() -> Self

Create a new shared page cache with default capacity (64 pages)

pub fn get(&self, page_id: u64) -> Option<IndexPage>

Get a page from the cache (returns clone if found)

pub fn insert(&self, page_id: u64, page: IndexPage)

Insert a page into the cache, evicting old entries if at capacity

pub fn clear(&self)

Clear all entries from the cache

pub fn stats(&self) -> (usize, usize)

Get cache statistics (current size, capacity)

pub fn is_empty(&self) -> bool

Check if cache is empty

pub fn len(&self) -> usize

Get the number of entries in the cache

Trait Implementations

impl Clone for BTreePageCache

fn clone(&self) -> BTreePageCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.