Method peek

atomic-repository/src/changestore/cache.rs:69–71

Read an entry without updating its access time. This is safe to call with only a shared reference (`&self`), making it suitable for use behind a `RwLock::read()` guard. The trade-off is that accessed entries don't get promoted in the LRU order, but this is acceptable when the alternative is serializing all readers on a write lock.

(&self, key: &K)

    /// the LRU order, but this is acceptable when the alternative
    /// is serializing all readers on a write lock.
    pub(crate) fn peek(&self, key: &K) -> Option<&V> {
        self.entries.get(key).map(|entry| &entry.value)
    }

    /// Insert an entry into the cache.
    ///