Struct BufferPool 

pub struct BufferPool { /* private fields */ }

LRU buffer pool for caching pages in memory

Implementations

impl BufferPool

pub fn new(page_manager: Arc<PageManager>, capacity: usize) -> Self

Create a new buffer pool with the specified capacity

Arguments

• page_manager - Page manager for disk I/O
• capacity - Maximum number of pages to cache (default: 1000 = ~4MB)

pub fn get_page(&self, page_id: PageId) -> Result<Page, StorageError>

Get a page from the cache or load from disk

Arguments

• page_id - ID of the page to retrieve

Returns

The requested page, either from cache or loaded from disk

pub fn put_page(&self, page: Page) -> Result<(), StorageError>

Put a page into the cache

Arguments

• page - The page to cache

pub fn flush_dirty(&self) -> Result<(), StorageError>

Flush all dirty pages to disk

pub fn evict(&self, page_id: PageId) -> Result<(), StorageError>

Manually evict a page from the cache

Arguments

• page_id - ID of the page to evict

pub fn capacity(&self) -> usize

Get the current capacity of the buffer pool

pub fn size(&self) -> Result<usize, StorageError>

Get the current number of pages in the cache

pub fn stats(&self) -> &BufferPoolStats

Get statistics for the buffer pool

Trait Implementations

impl Debug for BufferPool

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

Formats the value using the given formatter.