Endorphin

Key-Value based in-memory cache library which supports Custom Expiration Policies with standard HashMap, HashSet interface.

use endorphin::HashMap;
use endorphin::LazyFixedTTLPolicy;

use std::time::Duration;
use std::thread::sleep;

let mut cache = HashMap::new(LazyFixedTTLPolicy::new(Duration::from_secs(30)));
cache.insert("expired_after", "30 seconds!", ());

cache.get("expired_after").is_none(); // false
sleep(Duration::from_secs(30));
cache.get("expired_after").is_none(); // true

Currently, we provide two pre-defined policies. LazyFixedTTLPolicy and TTLPolicy we'll make more on future release

LazyFixedTTLPolicy uses Lazy Expiration which is like other cache crates. cached, ttl_cache which expire items when you access it after expired.
TTLPolicy uses Active Expiration which expires even you don't access to expired entries.