<?php
namespace Aws;
/**
* Represents a simple cache interface.
*/
interface CacheInterface
{
/**
* Get a cache item by key.
*
* @param string $key Key to retrieve.
*
* @return mixed|null Returns the value or null if not found.
*/
public function get($key);
/**
* Set a cache key value.
*
* @param string $key Key to set
* @param mixed $value Value to set.
* @param int $ttl Number of seconds the item is allowed to live. Set
* to 0 to allow an unlimited lifetime.
*/
public function set($key, $value, $ttl = 0);
/**
* Remove a cache key.
*
* @param string $key Key to remove.
*/
public function remove($key);
}