Struct Pool 

pub struct Pool { /* private fields */ }

A Pool caches pages of Blob data in memory.

A single buffer pool can be used to cache data from multiple blobs by assigning a unique id to each.

Implements the Clock replacement policy, which is a lightweight approximation of LRU. The page cache is a circular list of recently accessed pages, and clock is the index of the next page within it to examine for replacement. When a page needs to be evicted, we start the search at clock within cache, searching for the first page with a false reference bit, and setting any skipped page’s reference bit to false along the way.

Implementations

impl Pool

pub fn new(capacity: usize) -> Self

Return a new empty buffer pool with an initial next-blob id of 0, and a max cache capacity of capacity pages.

Panics

Panics if capacity is 0.