timed-dashmap

A timed expiration map wrapper around the performant and concurrent DashMap. Automatically creates a reaping thread so memory gets cleared quickly after an entry expires, instead of waiting for an access that passively clears it.

// create the map
let mut minute_cache = ExpiringDashMap::new(Duration::from_secs(60));

// run `start` to kick off the reaper thread
minute_cache.start(Duration::from_millis(500));

// add a value
minute_cache.insert("key", "value");

// see that it's there
minute_cache.len();
> 1
minute_cache.get("key");
> Some(&"key")

// wait a minute and see that the cache is now empty
minute_cache.len()
> 0
minute_cache.get("key");
> None

Currently probably not safe because of manual unsafe lifetime changing in get(), iter(), and iter_mut().