Struct GraphCache 

pub struct GraphCache { /* private fields */ }

The store’s per-snapshot adjacency cache.

Implementations

impl GraphCache

pub fn enabled(&self) -> bool

Whether graphs can be kept at all.

pub fn get(&self, key: &[u8], ci: u64) -> Option<Graph>

The graph cached for key at commit index ci.

pub fn insert(&self, key: Vec<u8>, ci: u64, graph: Graph, bytes: usize) -> bool

Keep graph (about bytes resident) for key at ci. Returns whether it is now resident.

pub fn rent(&self, key: &[u8], ci: u64, rows: u64, build_rows: u64) -> bool

Record rows adjacency rows read through storage for key at ci, and whether the rows read at ci now pay for one build of build_rows rows.