0 期架构 Week2 作业 1

interface Cache4App{
    get(Object key): Object;
    put(Object key, Object value): void;
    delete(Object key): void;
}
interface Cache4System{
    reBuild(Config conf): void;
}
class Cache implements Cache4App, Cache4System{
    get(){...}
    put(){...}
    delete(){...}
    reBuild(){...}
}
// App
const cacheValue = (Cache as Cache4App).get(...);
// System
(Cache as Cache4System).reBuild(...);