Endorphin

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

Example

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

use endorphin::policy::TTLPolicy; use endorphin::HashMap;

fn main() { let mut cache = HashMap::new(TTLPolicy::new());

cache.insert("Still", "Alive", Duration::from_secs(3));
cache.insert("Gonna", "Die", Duration::from_secs(1));

sleep(Duration::from_secs(1));

assert_eq!(cache.get(&"Still"), Some(&"Alive"));
assert_eq!(cache.get(&"Gonna"), None);

}

```

Currently, we are providing four pre-defined policies.

• LazyFixedTTLPolicy uses Lazy Expiration as other cache crates do, it expires items when you access entry after its TTL.
• TTLPolicy uses Active Expiration which expires even you don't access to expired entries.
• TTIPolicy uses Active Expiration which expires even you don't access to expired entries.
• MixedPolicy is mixed policy of TTL and TTI